64490324 has 6 divisors (see below), whose sum is σ = 112858074. Its totient is φ = 32245160.

The previous prime is 64490311. The next prime is 64490357. The reversal of 64490324 is 42309446.

It can be written as a sum of positive squares in only one way, i.e., 62694724 + 1795600 = 7918^2 + 1340^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8061287 + ... + 8061294.

It is an arithmetic number, because the mean of its divisors is an integer number (18809679).

Almost surely, 2^64490324 is an apocalyptic number.

It is an amenable number.

64490324 is a deficient number, since it is larger than the sum of its proper divisors (48367750).

64490324 is a wasteful number, since it uses less digits than its factorization.

64490324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122585 (or 16122583 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64490324 is about 8030.5867780630. The cubic root of 64490324 is about 401.0189106821.

The spelling of 64490324 in words is "sixty-four million, four hundred ninety thousand, three hundred twenty-four".