64539392 has 36 divisors (see below), whose sum is σ = 131040840. Its totient is φ = 31715328.

The previous prime is 64539383. The next prime is 64539401. The reversal of 64539392 is 29393546.

It is an interprime number because it is at equal distance from previous prime (64539383) and next prime (64539401).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12968 + ... + 17240.

Almost surely, 2^64539392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64539392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65520420).

64539392 is an abundant number, since it is smaller than the sum of its proper divisors (66501448).

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

64539392 is an equidigital number, since it uses as much as digits as its factorization.

64539392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348 (or 4334 counting only the distinct ones).

The product of its digits is 174960, while the sum is 41.

The square root of 64539392 is about 8033.6412665740. The cubic root of 64539392 is about 401.1205910908.

The spelling of 64539392 in words is "sixty-four million, five hundred thirty-nine thousand, three hundred ninety-two".