64189408 has 12 divisors (see below), whose sum is σ = 126372960. Its totient is φ = 32094688.

The previous prime is 64189397. The next prime is 64189409. The reversal of 64189408 is 80498146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64189409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002928 + ... + 1002991.

It is an arithmetic number, because the mean of its divisors is an integer number (10531080).

Almost surely, 2^64189408 is an apocalyptic number.

It is an amenable number.

64189408 is a deficient number, since it is larger than the sum of its proper divisors (62183552).

64189408 is a wasteful number, since it uses less digits than its factorization.

64189408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005929 (or 2005921 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 64189408 is about 8011.8292542964. The cubic root of 64189408 is about 400.3942113659.

The spelling of 64189408 in words is "sixty-four million, one hundred eighty-nine thousand, four hundred eight".