66056512 has 28 divisors (see below), whose sum is σ = 132565140. Its totient is φ = 32654336.

The previous prime is 66056491. The next prime is 66056527. The reversal of 66056512 is 21565066.

It can be written as a sum of positive squares in 2 ways, for example, as 36288576 + 29767936 = 6024^2 + 5456^2 .

It is a super-2 number, since 2×66056512² = 8726925555212288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103 + ... + 11494.

Almost surely, 2^66056512 is an apocalyptic number.

It is an amenable number.

66056512 is an abundant number, since it is smaller than the sum of its proper divisors (66508628).

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

66056512 is a wasteful number, since it uses less digits than its factorization.

66056512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698 (or 11688 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 66056512 is about 8127.5157336052. The cubic root of 66056512 is about 404.2393118625.

The spelling of 66056512 in words is "sixty-six million, fifty-six thousand, five hundred twelve".