66761004 has 24 divisors (see below), whose sum is σ = 157749760. Its totient is φ = 21971664.

The previous prime is 66760999. The next prime is 66761017. The reversal of 66761004 is 40016766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34264 + ... + 36159.

Almost surely, 2^66761004 is an apocalyptic number.

It is an amenable number.

66761004 is an abundant number, since it is smaller than the sum of its proper divisors (90988756).

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

66761004 is a wasteful number, since it uses less digits than its factorization.

66761004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70509 (or 70507 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66761004 is about 8170.7407252954. The cubic root of 66761004 is about 405.6713024668.

The spelling of 66761004 in words is "sixty-six million, seven hundred sixty-one thousand, four".