64501536 has 96 divisors (see below), whose sum is σ = 195628608. Its totient is φ = 18391040.

The previous prime is 64501517. The next prime is 64501571. The reversal of 64501536 is 63510546.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16156 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (2037798).

Almost surely, 2^64501536 is an apocalyptic number.

64501536 is a gapful number since it is divisible by the number (66) 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 64501536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97814304).

64501536 is an abundant number, since it is smaller than the sum of its proper divisors (131127072).

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

64501536 is a wasteful number, since it uses less digits than its factorization.

64501536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 64501536 is about 8031.2848287183. The cubic root of 64501536 is about 401.0421491217.

The spelling of 64501536 in words is "sixty-four million, five hundred one thousand, five hundred thirty-six".