66463372 has 6 divisors (see below), whose sum is σ = 116310908. Its totient is φ = 33231684.

The previous prime is 66463289. The next prime is 66463379. The reversal of 66463372 is 27336466.

It is a super-2 number, since 2×66463372² = 8834759635220768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66463379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307918 + ... + 8307925.

Almost surely, 2^66463372 is an apocalyptic number.

It is an amenable number.

66463372 is a deficient number, since it is larger than the sum of its proper divisors (49847536).

66463372 is a wasteful number, since it uses less digits than its factorization.

66463372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16615847 (or 16615845 counting only the distinct ones).

The product of its digits is 108864, while the sum is 37.

The square root of 66463372 is about 8152.5070990463. The cubic root of 66463372 is about 405.0675536352.

The spelling of 66463372 in words is "sixty-six million, four hundred sixty-three thousand, three hundred seventy-two".