68011015 has 4 divisors (see below), whose sum is σ = 81613224. Its totient is φ = 54408808.

The previous prime is 68011007. The next prime is 68011037. The reversal of 68011015 is 51011086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68011015 - 2³ = 68011007 is a prime.

It is a super-2 number, since 2×68011015² = 9250996322660450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 6801097 + ... + 6801106.

It is an arithmetic number, because the mean of its divisors is an integer number (20403306).

Almost surely, 2^68011015 is an apocalyptic number.

68011015 is a deficient number, since it is larger than the sum of its proper divisors (13602209).

68011015 is a wasteful number, since it uses less digits than its factorization.

68011015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602208.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 68011015 is about 8246.8791066682. The cubic root of 68011015 is about 408.1875479386.

The spelling of 68011015 in words is "sixty-eight million, eleven thousand, fifteen".