66959804 has 12 divisors (see below), whose sum is σ = 124072704. Its totient is φ = 31510464.

The previous prime is 66959759. The next prime is 66959807. The reversal of 66959804 is 40895966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66959807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492284 + ... + 492419.

It is an arithmetic number, because the mean of its divisors is an integer number (10339392).

Almost surely, 2^66959804 is an apocalyptic number.

It is an amenable number.

66959804 is a deficient number, since it is larger than the sum of its proper divisors (57112900).

66959804 is a wasteful number, since it uses less digits than its factorization.

66959804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984724 (or 984722 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 66959804 is about 8182.8970420017. The cubic root of 66959804 is about 406.0735709169.

The spelling of 66959804 in words is "sixty-six million, nine hundred fifty-nine thousand, eight hundred four".