693947 has 4 divisors (see below), whose sum is σ = 696240. Its totient is φ = 691656.

The previous prime is 693943. The next prime is 693961. The reversal of 693947 is 749396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 693947 - 2² = 693943 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 693947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693943) 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, 608 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (174060).

2⁶⁹³⁹⁴⁷ is an apocalyptic number.

693947 is a deficient number, since it is larger than the sum of its proper divisors (2293).

693947 is a wasteful number, since it uses less digits than its factorization.

693947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its digits is 40824, while the sum is 38.

The square root of 693947 is about 833.0348131981. The cubic root of 693947 is about 88.5337311704.

The spelling of 693947 in words is "six hundred ninety-three thousand, nine hundred forty-seven".