64515484 has 12 divisors (see below), whose sum is σ = 123166008. Its totient is φ = 29325200.

The previous prime is 64515449. The next prime is 64515487. The reversal of 64515484 is 48451546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64515487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733087 + ... + 733174.

It is an arithmetic number, because the mean of its divisors is an integer number (10263834).

Almost surely, 2^64515484 is an apocalyptic number.

It is an amenable number.

64515484 is a deficient number, since it is larger than the sum of its proper divisors (58650524).

64515484 is a wasteful number, since it uses less digits than its factorization.

64515484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466276 (or 1466274 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The square root of 64515484 is about 8032.1531359904. The cubic root of 64515484 is about 401.0710545457.

It can be divided in two parts, 6451 and 5484, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 64515484 in words is "sixty-four million, five hundred fifteen thousand, four hundred eighty-four".