66568760 has 32 divisors (see below), whose sum is σ = 150020640. Its totient is φ = 26584704.

The previous prime is 66568757. The next prime is 66568763. The reversal of 66568760 is 6786566.

It is an interprime number because it is at equal distance from previous prime (66568757) and next prime (66568763).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66568763) 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, 38474 + ... + 40166.

It is an arithmetic number, because the mean of its divisors is an integer number (4688145).

Almost surely, 2^66568760 is an apocalyptic number.

It is an amenable number.

66568760 is an abundant number, since it is smaller than the sum of its proper divisors (83451880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66568760 is a wasteful number, since it uses less digits than its factorization.

66568760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 66568760 is about 8158.9680720052. The cubic root of 66568760 is about 405.2815397473.

The spelling of 66568760 in words is "sixty-six million, five hundred sixty-eight thousand, seven hundred sixty".