66290964 has 24 divisors (see below), whose sum is σ = 156276288. Its totient is φ = 21868800.

The previous prime is 66290941. The next prime is 66290999. The reversal of 66290964 is 46909266.

66290964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27312 + ... + 29639.

It is an arithmetic number, because the mean of its divisors is an integer number (6511512).

Almost surely, 2^66290964 is an apocalyptic number.

It is an amenable number.

66290964 is an abundant number, since it is smaller than the sum of its proper divisors (89985324).

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

66290964 is a wasteful number, since it uses less digits than its factorization.

66290964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57055 (or 57053 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 66290964 is about 8141.9263076989. The cubic root of 66290964 is about 404.7169978419.

The spelling of 66290964 in words is "sixty-six million, two hundred ninety thousand, nine hundred sixty-four".