68257530 has 48 divisors (see below), whose sum is σ = 193605984. Its totient is φ = 16547040.

The previous prime is 68257507. The next prime is 68257549. The reversal of 68257530 is 3575286.

68257530 is a `hidden beast` number, since 6 + 82 + 575 + 3 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33484 + ... + 35463.

It is an arithmetic number, because the mean of its divisors is an integer number (4033458).

Almost surely, 2^68257530 is an apocalyptic number.

68257530 is an abundant number, since it is smaller than the sum of its proper divisors (125348454).

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

68257530 is a wasteful number, since it uses less digits than its factorization.

68257530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68971 (or 68968 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 68257530 is about 8261.8115446916. The cubic root of 68257530 is about 408.6801300208.

The spelling of 68257530 in words is "sixty-eight million, two hundred fifty-seven thousand, five hundred thirty".