256996206 has 16 divisors (see below), whose sum is σ = 571102800. Its totient is φ = 85665384.

The previous prime is 256996199. The next prime is 256996213. The reversal of 256996206 is 602699652.

It is an interprime number because it is at equal distance from previous prime (256996199) and next prime (256996213).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2379541 + ... + 2379648.

It is an arithmetic number, because the mean of its divisors is an integer number (35693925).

Almost surely, 2^256996206 is an apocalyptic number.

256996206 is an abundant number, since it is smaller than the sum of its proper divisors (314106594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256996206 is a wasteful number, since it uses less digits than its factorization.

256996206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759200 (or 4759194 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 256996206 is about 16031.1012098358. The cubic root of 256996206 is about 635.7829893296.

The spelling of 256996206 in words is "two hundred fifty-six million, nine hundred ninety-six thousand, two hundred six".