66311080 has 32 divisors (see below), whose sum is σ = 162764640. Its totient is φ = 24112960.

The previous prime is 66311059. The next prime is 66311111. The reversal of 66311080 is 8011366.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74914 + ... + 75793.

It is an arithmetic number, because the mean of its divisors is an integer number (5086395).

Almost surely, 2^66311080 is an apocalyptic number.

It is an amenable number.

66311080 is an abundant number, since it is smaller than the sum of its proper divisors (96453560).

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

66311080 is a wasteful number, since it uses less digits than its factorization.

66311080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150729 (or 150725 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66311080 is about 8143.1615481949. The cubic root of 66311080 is about 404.7579308403.

The spelling of 66311080 in words is "sixty-six million, three hundred eleven thousand, eighty".