64930537 has 12 divisors (see below), whose sum is σ = 76230660. Its totient is φ = 55139616.

The previous prime is 64930529. The next prime is 64930549. The reversal of 64930537 is 73503946.

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 44036496 = 4571^2 + 6636^2 .

It is not a de Polignac number, because 64930537 - 2³ = 64930529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64930496 and 64930505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64930517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738 + ... + 11419.

It is an arithmetic number, because the mean of its divisors is an integer number (6352555).

Almost surely, 2^64930537 is an apocalyptic number.

It is an amenable number.

64930537 is a deficient number, since it is larger than the sum of its proper divisors (11300123).

64930537 is a wasteful number, since it uses less digits than its factorization.

64930537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280 (or 12273 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 64930537 is about 8057.9486843737. The cubic root of 64930537 is about 401.9292983092.

The spelling of 64930537 in words is "sixty-four million, nine hundred thirty thousand, five hundred thirty-seven".