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694389 = 3231463
BaseRepresentation
bin10101001100001110101
31022021112010
42221201311
5134210024
622514433
75621313
oct2514165
91267463
10694389
11434783
12295a19
131b40a7
141410b3
15dab29
hexa9875

694389 has 4 divisors (see below), whose sum is σ = 925856. Its totient is φ = 462924.

The previous prime is 694387. The next prime is 694391. The reversal of 694389 is 983496.

694389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (694387) and next prime (694391).

It is not a de Polignac number, because 694389 - 21 = 694387 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115729 + ... + 115734.

It is an arithmetic number, because the mean of its divisors is an integer number (231464).

2694389 is an apocalyptic number.

It is an amenable number.

694389 is a deficient number, since it is larger than the sum of its proper divisors (231467).

694389 is a wasteful number, since it uses less digits than its factorization.

694389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231466.

The product of its digits is 46656, while the sum is 39.

The square root of 694389 is about 833.3000660026. The cubic root of 694389 is about 88.5525239619.

It can be divided in two parts, 6 and 94389, that added together give a triangular number (94395 = T434).

The spelling of 694389 in words is "six hundred ninety-four thousand, three hundred eighty-nine".

Divisors: 1 3 231463 694389