204664406 has 8 divisors (see below), whose sum is σ = 311202264. Its totient is φ = 100930320.

The previous prime is 204664379. The next prime is 204664433. The reversal of 204664406 is 604466402.

It is an interprime number because it is at equal distance from previous prime (204664379) and next prime (204664433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700760 + ... + 701051.

It is an arithmetic number, because the mean of its divisors is an integer number (38900283).

Almost surely, 2^204664406 is an apocalyptic number.

204664406 is a deficient number, since it is larger than the sum of its proper divisors (106537858).

204664406 is a wasteful number, since it uses less digits than its factorization.

204664406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401886.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 204664406 is about 14306.0968121986. The cubic root of 204664406 is about 589.3149244567.

The spelling of 204664406 in words is "two hundred four million, six hundred sixty-four thousand, four hundred six".