68572665 has 24 divisors (see below), whose sum is σ = 135839808. Its totient is φ = 31347360.

The previous prime is 68572661. The next prime is 68572687. The reversal of 68572665 is 56627586.

It is not a de Polignac number, because 68572665 - 2² = 68572661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68572665.

It is not an unprimeable number, because it can be changed into a prime (68572661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108531 + ... + 109160.

It is an arithmetic number, because the mean of its divisors is an integer number (5659992).

Almost surely, 2^68572665 is an apocalyptic number.

It is an amenable number.

68572665 is a deficient number, since it is larger than the sum of its proper divisors (67267143).

68572665 is a wasteful number, since it uses less digits than its factorization.

68572665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217709 (or 217706 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 68572665 is about 8280.8613682394. The cubic root of 68572665 is about 409.3081033202.

The spelling of 68572665 in words is "sixty-eight million, five hundred seventy-two thousand, six hundred sixty-five".