68257524 has 12 divisors (see below), whose sum is σ = 159267584. Its totient is φ = 22752504.

The previous prime is 68257507. The next prime is 68257549. The reversal of 68257524 is 42575286.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×68257524² = 9318179165221152, which contains 22 as substring.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2844052 + ... + 2844075.

Almost surely, 2^68257524 is an apocalyptic number.

It is an amenable number.

68257524 is an abundant number, since it is smaller than the sum of its proper divisors (91010060).

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

68257524 is a wasteful number, since it uses less digits than its factorization.

68257524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688134 (or 5688132 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 68257524 is about 8261.8111815751. The cubic root of 68257524 is about 408.6801180461.

The spelling of 68257524 in words is "sixty-eight million, two hundred fifty-seven thousand, five hundred twenty-four".