64536552 has 24 divisors (see below), whose sum is σ = 174786690. Its totient is φ = 21512160.

The previous prime is 64536523. The next prime is 64536553. The reversal of 64536552 is 25563546.

It is a happy number.

64536552 is a `hidden beast` number, since 645 + 3 + 6 + 5 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58155876 + 6380676 = 7626^2 + 2526^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (64536553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 448099 + ... + 448242.

Almost surely, 2^64536552 is an apocalyptic number.

It is an amenable number.

64536552 is an abundant number, since it is smaller than the sum of its proper divisors (110250138).

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

64536552 is a wasteful number, since it uses less digits than its factorization.

64536552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896353 (or 896346 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 64536552 is about 8033.4645079194. The cubic root of 64536552 is about 401.1147073498.

The spelling of 64536552 in words is "sixty-four million, five hundred thirty-six thousand, five hundred fifty-two".