256604626 has 8 divisors (see below), whose sum is σ = 389544624. Its totient is φ = 126756420.

The previous prime is 256604591. The next prime is 256604627. The reversal of 256604626 is 626406652.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (256604627) 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 3 ways as a sum of consecutive naturals, for example, 772740 + ... + 773071.

It is an arithmetic number, because the mean of its divisors is an integer number (48693078).

Almost surely, 2^256604626 is an apocalyptic number.

256604626 is a deficient number, since it is larger than the sum of its proper divisors (132939998).

256604626 is a wasteful number, since it uses less digits than its factorization.

256604626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545896.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 256604626 is about 16018.8834192649. The cubic root of 256604626 is about 635.4599152279.

The spelling of 256604626 in words is "two hundred fifty-six million, six hundred four thousand, six hundred twenty-six".