64562885 has 4 divisors (see below), whose sum is σ = 77475468. Its totient is φ = 51650304.

The previous prime is 64562873. The next prime is 64562887. The reversal of 64562885 is 58826546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37957921 + 26604964 = 6161^2 + 5158^2 .

It is a cyclic number.

It is not a de Polignac number, because 64562885 - 2²⁴ = 47785669 is a prime.

It is a super-2 number, since 2×64562885² = 8336732239046450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64562887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6456284 + ... + 6456293.

It is an arithmetic number, because the mean of its divisors is an integer number (19368867).

Almost surely, 2^64562885 is an apocalyptic number.

It is an amenable number.

64562885 is a deficient number, since it is larger than the sum of its proper divisors (12912583).

64562885 is a wasteful number, since it uses less digits than its factorization.

64562885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12912582.

The product of its digits is 460800, while the sum is 44.

The square root of 64562885 is about 8035.1032974069. The cubic root of 64562885 is about 401.1692558549.

The spelling of 64562885 in words is "sixty-four million, five hundred sixty-two thousand, eight hundred eighty-five".