64516037 has 4 divisors (see below), whose sum is σ = 68311116. Its totient is φ = 60720960.

The previous prime is 64516027. The next prime is 64516043. The reversal of 64516037 is 73061546.

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 33535681 + 30980356 = 5791^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 64516037 - 2⁴ = 64516021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64515994 and 64516012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64516027) 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, 1897514 + ... + 1897547.

It is an arithmetic number, because the mean of its divisors is an integer number (17077779).

Almost surely, 2^64516037 is an apocalyptic number.

It is an amenable number.

64516037 is a deficient number, since it is larger than the sum of its proper divisors (3795079).

64516037 is a wasteful number, since it uses less digits than its factorization.

64516037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795078.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 64516037 is about 8032.1875600611. The cubic root of 64516037 is about 401.0722004807.

The spelling of 64516037 in words is "sixty-four million, five hundred sixteen thousand, thirty-seven".