64137563 has 16 divisors (see below), whose sum is σ = 75202560. Its totient is φ = 53559456.

The previous prime is 64137551. The next prime is 64137599. The reversal of 64137563 is 36573146.

It is a cyclic number.

It is not a de Polignac number, because 64137563 - 2¹⁰ = 64136539 is a prime.

It is a super-2 number, since 2×64137563² = 8227253975157938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64137533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125753 + ... + 126261.

It is an arithmetic number, because the mean of its divisors is an integer number (4700160).

Almost surely, 2^64137563 is an apocalyptic number.

64137563 is a deficient number, since it is larger than the sum of its proper divisors (11064997).

64137563 is a wasteful number, since it uses less digits than its factorization.

64137563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its digits is 45360, while the sum is 35.

The square root of 64137563 is about 8008.5930724441. The cubic root of 64137563 is about 400.2863844942.

The spelling of 64137563 in words is "sixty-four million, one hundred thirty-seven thousand, five hundred sixty-three".