64191004 has 12 divisors (see below), whose sum is σ = 115370584. Its totient is φ = 31227984.

The previous prime is 64190993. The next prime is 64191013. The reversal of 64191004 is 40019146.

It is a self number, because there is not a number n which added to its sum of digits gives 64191004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216714 + ... + 217009.

Almost surely, 2^64191004 is an apocalyptic number.

It is an amenable number.

64191004 is a deficient number, since it is larger than the sum of its proper divisors (51179580).

64191004 is a wasteful number, since it uses less digits than its factorization.

64191004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433764 (or 433762 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 64191004 is about 8011.9288563991. The cubic root of 64191004 is about 400.3975297943.

The spelling of 64191004 in words is "sixty-four million, one hundred ninety-one thousand, four".