66532464 has 60 divisors (see below), whose sum is σ = 186775992. Its totient is φ = 22108800.

The previous prime is 66532447. The next prime is 66532511. The reversal of 66532464 is 46423566.

66532464 is a `hidden beast` number, since 66 + 532 + 4 + 64 = 666.

It is a super-2 number, since 2×66532464² = 8853137531822592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70234 + ... + 71174.

Almost surely, 2^66532464 is an apocalyptic number.

It is an amenable number.

66532464 is an abundant number, since it is smaller than the sum of its proper divisors (120243528).

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

66532464 is a wasteful number, since it uses less digits than its factorization.

66532464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1437 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66532464 is about 8156.7434678308. The cubic root of 66532464 is about 405.2078676871.

The spelling of 66532464 in words is "sixty-six million, five hundred thirty-two thousand, four hundred sixty-four".