66100456 has 32 divisors (see below), whose sum is σ = 126584640. Its totient is φ = 32352768.

The previous prime is 66100429. The next prime is 66100499. The reversal of 66100456 is 65400166.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79515 + ... + 80341.

It is an arithmetic number, because the mean of its divisors is an integer number (3955770).

Almost surely, 2^66100456 is an apocalyptic number.

It is an amenable number.

66100456 is a deficient number, since it is larger than the sum of its proper divisors (60484184).

66100456 is a wasteful number, since it uses less digits than its factorization.

66100456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66100456 is about 8130.2186932456. The cubic root of 66100456 is about 404.3289318667.

The spelling of 66100456 in words is "sixty-six million, one hundred thousand, four hundred fifty-six".