66044979 has 48 divisors (see below), whose sum is σ = 128104704. Its totient is φ = 31665600.

The previous prime is 66044959. The next prime is 66044987. The reversal of 66044979 is 97944066.

It is not a de Polignac number, because 66044979 - 2⁷ = 66044851 is a prime.

It is a super-2 number, since 2×66044979² = 8723878502220882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66044959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5344 + ... + 12674.

It is an arithmetic number, because the mean of its divisors is an integer number (2668848).

Almost surely, 2^66044979 is an apocalyptic number.

66044979 is a deficient number, since it is larger than the sum of its proper divisors (62059725).

66044979 is a wasteful number, since it uses less digits than its factorization.

66044979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368 (or 7365 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 66044979 is about 8126.8061992396. The cubic root of 66044979 is about 404.2157847179.

The spelling of 66044979 in words is "sixty-six million, forty-four thousand, nine hundred seventy-nine".