66904107 has 16 divisors (see below), whose sum is σ = 92313600. Its totient is φ = 43056000.

The previous prime is 66904099. The next prime is 66904121. The reversal of 66904107 is 70140966.

It is a happy number.

It is not a de Polignac number, because 66904107 - 2³ = 66904099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66904127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55107 + ... + 56307.

It is an arithmetic number, because the mean of its divisors is an integer number (5769600).

Almost surely, 2^66904107 is an apocalyptic number.

66904107 is a deficient number, since it is larger than the sum of its proper divisors (25409493).

66904107 is a wasteful number, since it uses less digits than its factorization.

66904107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 66904107 is about 8179.4930772023. The cubic root of 66904107 is about 405.9609493530.

The spelling of 66904107 in words is "sixty-six million, nine hundred four thousand, one hundred seven".