66948712 has 8 divisors (see below), whose sum is σ = 125528850. Its totient is φ = 33474352.

The previous prime is 66948709. The next prime is 66948767. The reversal of 66948712 is 21784966.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 7257636 = 7726^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4184287 + ... + 4184302.

Almost surely, 2^66948712 is an apocalyptic number.

It is an amenable number.

66948712 is a deficient number, since it is larger than the sum of its proper divisors (58580138).

66948712 is a wasteful number, since it uses less digits than its factorization.

66948712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8368595 (or 8368591 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 66948712 is about 8182.2192588564. The cubic root of 66948712 is about 406.0511474304.

The spelling of 66948712 in words is "sixty-six million, nine hundred forty-eight thousand, seven hundred twelve".