66907902 has 16 divisors (see below), whose sum is σ = 134173440. Its totient is φ = 22243032.

The previous prime is 66907879. The next prime is 66907909. The reversal of 66907902 is 20970966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66907909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12438 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (8385840).

Almost surely, 2^66907902 is an apocalyptic number.

66907902 is an abundant number, since it is smaller than the sum of its proper divisors (67265538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66907902 is a wasteful number, since it uses less digits than its factorization.

66907902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29807.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 66907902 is about 8179.7250565040. The cubic root of 66907902 is about 405.9686249789.

The spelling of 66907902 in words is "sixty-six million, nine hundred seven thousand, nine hundred two".