64490304 has 56 divisors (see below), whose sum is σ = 173553120. Its totient is φ = 21128704.

The previous prime is 64490303. The next prime is 64490311. The reversal of 64490304 is 40309446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64490303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8482 + ... + 14174.

Almost surely, 2^64490304 is an apocalyptic number.

64490304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64490304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86776560).

64490304 is an abundant number, since it is smaller than the sum of its proper divisors (109062816).

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

64490304 is a wasteful number, since it uses less digits than its factorization.

64490304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767 (or 5757 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 64490304 is about 8030.5855328239. The cubic root of 64490304 is about 401.0188692269.

The spelling of 64490304 in words is "sixty-four million, four hundred ninety thousand, three hundred four".