64276512 has 48 divisors (see below), whose sum is σ = 170644320. Its totient is φ = 21181952.

The previous prime is 64276489. The next prime is 64276523. The reversal of 64276512 is 21567246.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×64276512² = 8262939989772288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4783 + ... + 12305.

It is an arithmetic number, because the mean of its divisors is an integer number (3555090).

Almost surely, 2^64276512 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 64276512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85322160).

64276512 is an abundant number, since it is smaller than the sum of its proper divisors (106367808).

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

64276512 is a wasteful number, since it uses less digits than its factorization.

64276512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625 (or 7617 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 64276512 is about 8017.2633734960. The cubic root of 64276512 is about 400.5752390203.

The spelling of 64276512 in words is "sixty-four million, two hundred seventy-six thousand, five hundred twelve".