204694629 has 4 divisors (see below), whose sum is σ = 272926176. Its totient is φ = 136463084.

The previous prime is 204694621. The next prime is 204694631. The reversal of 204694629 is 926496402.

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 a cyclic number.

It is not a de Polignac number, because 204694629 - 2³ = 204694621 is a prime.

It is a super-2 number, since 2×204694629² = 83799782282895282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204694621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34115769 + ... + 34115774.

It is an arithmetic number, because the mean of its divisors is an integer number (68231544).

Almost surely, 2^204694629 is an apocalyptic number.

It is an amenable number.

204694629 is a deficient number, since it is larger than the sum of its proper divisors (68231547).

204694629 is an equidigital number, since it uses as much as digits as its factorization.

204694629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68231546.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 204694629 is about 14307.1530711040. The cubic root of 204694629 is about 589.3439312727.

The spelling of 204694629 in words is "two hundred four million, six hundred ninety-four thousand, six hundred twenty-nine".