66059979 has 32 divisors (see below), whose sum is σ = 99187200. Its totient is φ = 38903040.

The previous prime is 66059969. The next prime is 66060031. The reversal of 66059979 is 97995066.

It is not a de Polignac number, because 66059979 - 2⁸ = 66059723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66059969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53137 + ... + 54365.

It is an arithmetic number, because the mean of its divisors is an integer number (3099600).

Almost surely, 2^66059979 is an apocalyptic number.

66059979 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

66059979 is a deficient number, since it is larger than the sum of its proper divisors (33127221).

66059979 is a wasteful number, since it uses less digits than its factorization.

66059979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 66059979 is about 8127.7290186128. The cubic root of 66059979 is about 404.2463839544.

The spelling of 66059979 in words is "sixty-six million, fifty-nine thousand, nine hundred seventy-nine".