68665711 has 8 divisors (see below), whose sum is σ = 70378704. Its totient is φ = 66958080.

The previous prime is 68665699. The next prime is 68665717. The reversal of 68665711 is 11756686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68665711 - 2⁵ = 68665679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68665717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39615 + ... + 41311.

It is an arithmetic number, because the mean of its divisors is an integer number (8797338).

Almost surely, 2^68665711 is an apocalyptic number.

68665711 is a deficient number, since it is larger than the sum of its proper divisors (1712993).

68665711 is a wasteful number, since it uses less digits than its factorization.

68665711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681.

The product of its digits is 60480, while the sum is 40.

The square root of 68665711 is about 8286.4775990767. The cubic root of 68665711 is about 409.4931492088.

The spelling of 68665711 in words is "sixty-eight million, six hundred sixty-five thousand, seven hundred eleven".