66929499 has 48 divisors (see below), whose sum is σ = 120766464. Its totient is φ = 34776000.

The previous prime is 66929479. The next prime is 66929509. The reversal of 66929499 is 99492966.

66929499 is a `hidden beast` number, since 66 + 92 + 9 + 499 = 666.

It is not a de Polignac number, because 66929499 - 2¹⁷ = 66798427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66929479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57574 + ... + 58724.

It is an arithmetic number, because the mean of its divisors is an integer number (2515968).

Almost surely, 2^66929499 is an apocalyptic number.

66929499 is a deficient number, since it is larger than the sum of its proper divisors (53836965).

66929499 is a wasteful number, since it uses less digits than its factorization.

66929499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1245 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 66929499 is about 8181.0451043861. The cubic root of 66929499 is about 406.0123007428.

The spelling of 66929499 in words is "sixty-six million, nine hundred twenty-nine thousand, four hundred ninety-nine".