68261715 has 24 divisors (see below), whose sum is σ = 125281728. Its totient is φ = 34264320.

The previous prime is 68261693. The next prime is 68261729. The reversal of 68261715 is 51716286.

It is not a de Polignac number, because 68261715 - 2⁷ = 68261587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68261715.

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, 43851 + ... + 45380.

It is an arithmetic number, because the mean of its divisors is an integer number (5220072).

Almost surely, 2^68261715 is an apocalyptic number.

68261715 is a deficient number, since it is larger than the sum of its proper divisors (57020013).

68261715 is a wasteful number, since it uses less digits than its factorization.

68261715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89259 (or 89256 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 68261715 is about 8262.0648145606. The cubic root of 68261715 is about 408.6884821708.

The spelling of 68261715 in words is "sixty-eight million, two hundred sixty-one thousand, seven hundred fifteen".