66802004 has 12 divisors (see below), whose sum is σ = 117604704. Its totient is φ = 33200664.

The previous prime is 66801979. The next prime is 66802007. The reversal of 66802004 is 40020866.

66802004 is a modest number, since divided by 2004 gives 668 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66802007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49334 + ... + 50669.

It is an arithmetic number, because the mean of its divisors is an integer number (9800392).

Almost surely, 2^66802004 is an apocalyptic number.

It is an amenable number.

66802004 is a deficient number, since it is larger than the sum of its proper divisors (50802700).

66802004 is a wasteful number, since it uses less digits than its factorization.

66802004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100174 (or 100172 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 66802004 is about 8173.2492926620. The cubic root of 66802004 is about 405.7543305757.

The spelling of 66802004 in words is "sixty-six million, eight hundred two thousand, four".