68531512 has 16 divisors (see below), whose sum is σ = 146853360. Its totient is φ = 29370624.

The previous prime is 68531497. The next prime is 68531521. The reversal of 68531512 is 21513586.

It is a super-2 number, since 2×68531512² = 9393136274012288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611833 + ... + 611944.

It is an arithmetic number, because the mean of its divisors is an integer number (9178335).

Almost surely, 2^68531512 is an apocalyptic number.

It is an amenable number.

68531512 is an abundant number, since it is smaller than the sum of its proper divisors (78321848).

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

68531512 is a wasteful number, since it uses less digits than its factorization.

68531512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223790 (or 1223786 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 68531512 is about 8278.3761692738. The cubic root of 68531512 is about 409.2262066095.

The spelling of 68531512 in words is "sixty-eight million, five hundred thirty-one thousand, five hundred twelve".