66956056 has 16 divisors (see below), whose sum is σ = 125643240. Its totient is φ = 33451200.

The previous prime is 66956039. The next prime is 66956069. The reversal of 66956056 is 65065966.

It is a super-2 number, since 2×66956056² = 8966226870150272, 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, 10731 + ... + 15781.

Almost surely, 2^66956056 is an apocalyptic number.

It is an amenable number.

66956056 is a deficient number, since it is larger than the sum of its proper divisors (58687184).

66956056 is a wasteful number, since it uses less digits than its factorization.

66956056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714 (or 6710 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 66956056 is about 8182.6680245504. The cubic root of 66956056 is about 406.0659942711.

The spelling of 66956056 in words is "sixty-six million, nine hundred fifty-six thousand, fifty-six".