66976032 has 48 divisors (see below), whose sum is σ = 176383872. Its totient is φ = 22252800.

The previous prime is 66976009. The next prime is 66976067. The reversal of 66976032 is 23067966.

It is a tau number, because it is divible by the number of its divisors (48).

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, 34282 + ... + 36182.

It is an arithmetic number, because the mean of its divisors is an integer number (3674664).

Almost surely, 2^66976032 is an apocalyptic number.

It is an amenable number.

66976032 is an abundant number, since it is smaller than the sum of its proper divisors (109407840).

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

66976032 is a wasteful number, since it uses less digits than its factorization.

66976032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66976032 is about 8183.8885622912. Note that the first 3 decimals coincide. The cubic root of 66976032 is about 406.1063728330.

The spelling of 66976032 in words is "sixty-six million, nine hundred seventy-six thousand, thirty-two".