68513516 has 12 divisors (see below), whose sum is σ = 120065232. Its totient is φ = 34209168.

The previous prime is 68513507. The next prime is 68513551. The reversal of 68513516 is 61531586.

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, 8555 + ... + 14498.

It is an arithmetic number, because the mean of its divisors is an integer number (10005436).

Almost surely, 2^68513516 is an apocalyptic number.

It is an amenable number.

68513516 is a deficient number, since it is larger than the sum of its proper divisors (51551716).

68513516 is a wasteful number, since it uses less digits than its factorization.

68513516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800 (or 23798 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 68513516 is about 8277.2891697705. The cubic root of 68513516 is about 409.1903832862.

The spelling of 68513516 in words is "sixty-eight million, five hundred thirteen thousand, five hundred sixteen".