694280145 has 16 divisors (see below), whose sum is σ = 1196298432. Its totient is φ = 341799360.

The previous prime is 694280137. The next prime is 694280149. The reversal of 694280145 is 541082496.

It is not a de Polignac number, because 694280145 - 2³ = 694280137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (694280149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1780011 + ... + 1780400.

It is an arithmetic number, because the mean of its divisors is an integer number (74768652).

Almost surely, 2^694280145 is an apocalyptic number.

694280145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

694280145 is a deficient number, since it is larger than the sum of its proper divisors (502018287).

694280145 is a wasteful number, since it uses less digits than its factorization.

694280145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560432.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 694280145 is about 26349.1962875531. The cubic root of 694280145 is about 885.4789644588.

The spelling of 694280145 in words is "six hundred ninety-four million, two hundred eighty thousand, one hundred forty-five".