256612610 has 48 divisors (see below), whose sum is σ = 487347840. Its totient is φ = 97273440.

The previous prime is 256612597. The next prime is 256612663. The reversal of 256612610 is 16216652.

It is a super-2 number, since 2×256612610² = 131700063222024200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 946775 + ... + 947045.

It is an arithmetic number, because the mean of its divisors is an integer number (10153080).

Almost surely, 2^256612610 is an apocalyptic number.

256612610 is a deficient number, since it is larger than the sum of its proper divisors (230735230).

256612610 is a wasteful number, since it uses less digits than its factorization.

256612610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 256612610 is about 16019.1326232103. The cubic root of 256612610 is about 635.4665057291.

The spelling of 256612610 in words is "two hundred fifty-six million, six hundred twelve thousand, six hundred ten".