64289888 has 24 divisors (see below), whose sum is σ = 136307808. Its totient is φ = 29672064.

The previous prime is 64289879. The next prime is 64289909. The reversal of 64289888 is 88898246.

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, 76856 + ... + 77687.

It is an arithmetic number, because the mean of its divisors is an integer number (5679492).

Almost surely, 2^64289888 is an apocalyptic number.

It is an amenable number.

64289888 is an abundant number, since it is smaller than the sum of its proper divisors (72017920).

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

64289888 is a wasteful number, since it uses less digits than its factorization.

64289888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154566 (or 154558 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 53.

The square root of 64289888 is about 8018.0975299631. The cubic root of 64289888 is about 400.6030237823.

The spelling of 64289888 in words is "sixty-four million, two hundred eighty-nine thousand, eight hundred eighty-eight".