66962972 has 24 divisors (see below), whose sum is σ = 122127600. Its totient is φ = 32086656.

The previous prime is 66962971. The next prime is 66962993. The reversal of 66962972 is 27926966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962971) 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, 14048 + ... + 18200.

It is an arithmetic number, because the mean of its divisors is an integer number (5088650).

Almost surely, 2^66962972 is an apocalyptic number.

It is an amenable number.

66962972 is a deficient number, since it is larger than the sum of its proper divisors (55164628).

66962972 is a wasteful number, since it uses less digits than its factorization.

66962972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4323 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 66962972 is about 8183.0906141873. The cubic root of 66962972 is about 406.0799748623.

The spelling of 66962972 in words is "sixty-six million, nine hundred sixty-two thousand, nine hundred seventy-two".