64565272 has 8 divisors (see below), whose sum is σ = 121059900. Its totient is φ = 32282632.

The previous prime is 64565261. The next prime is 64565273. The reversal of 64565272 is 27256546.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64565273) 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 as a sum of consecutive naturals, namely, 4035322 + ... + 4035337.

Almost surely, 2^64565272 is an apocalyptic number.

It is an amenable number.

64565272 is a deficient number, since it is larger than the sum of its proper divisors (56494628).

64565272 is a wasteful number, since it uses less digits than its factorization.

64565272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070665 (or 8070661 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 64565272 is about 8035.2518317723. The cubic root of 64565272 is about 401.1741997645.

The spelling of 64565272 in words is "sixty-four million, five hundred sixty-five thousand, two hundred seventy-two".