64275912 has 72 divisors (see below), whose sum is σ = 184982850. Its totient is φ = 20158464.

The previous prime is 64275907. The next prime is 64275923. The reversal of 64275912 is 21957246.

64275912 is a `hidden beast` number, since 64 + 2 + 7 + 591 + 2 = 666.

64275912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 62821476 + 1454436 = 7926^2 + 1206^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19264 + ... + 22352.

Almost surely, 2^64275912 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 64275912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92491425).

64275912 is an abundant number, since it is smaller than the sum of its proper divisors (120706938).

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

64275912 is a wasteful number, since it uses less digits than its factorization.

64275912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135 (or 3111 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 64275912 is about 8017.2259541565. The cubic root of 64275912 is about 400.5739926039.

The spelling of 64275912 in words is "sixty-four million, two hundred seventy-five thousand, nine hundred twelve".