64489216 has 36 divisors (see below), whose sum is σ = 140435064. Its totient is φ = 29312000.

The previous prime is 64489199. The next prime is 64489241. The reversal of 64489216 is 61298446.

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, 8635 + ... + 14266.

It is an arithmetic number, because the mean of its divisors is an integer number (3900974).

Almost surely, 2^64489216 is an apocalyptic number.

It is an amenable number.

64489216 is an abundant number, since it is smaller than the sum of its proper divisors (75945848).

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

64489216 is a wasteful number, since it uses less digits than its factorization.

64489216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22928 (or 22914 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 64489216 is about 8030.5177915250. The cubic root of 64489216 is about 401.0166140508.

The spelling of 64489216 in words is "sixty-four million, four hundred eighty-nine thousand, two hundred sixteen".