64275552 has 96 divisors (see below), whose sum is σ = 204543360. Its totient is φ = 19474560.

The previous prime is 64275529. The next prime is 64275557. The reversal of 64275552 is 25557246.

64275552 is a `hidden beast` number, since 642 + 7 + 5 + 5 + 5 + 2 = 666.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64275557) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6123 + ... + 12885.

It is an arithmetic number, because the mean of its divisors is an integer number (2130660).

Almost surely, 2^64275552 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 64275552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102271680).

64275552 is an abundant number, since it is smaller than the sum of its proper divisors (140267808).

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

64275552 is a wasteful number, since it uses less digits than its factorization.

64275552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6793 (or 6779 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 64275552 is about 8017.2035024689. The cubic root of 64275552 is about 400.5732447504.

The spelling of 64275552 in words is "sixty-four million, two hundred seventy-five thousand, five hundred fifty-two".