65700513 has 12 divisors (see below), whose sum is σ = 95772820. Its totient is φ = 43397856.

The previous prime is 65700497. The next prime is 65700539. The reversal of 65700513 is 31500756.

65700513 is a `hidden beast` number, since 657 + 0 + 0 + 5 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29844369 + 35856144 = 5463^2 + 5988^2 .

It is not a de Polignac number, because 65700513 - 2⁴ = 65700497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65700013) 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, 32506 + ... + 34467.

Almost surely, 2^65700513 is an apocalyptic number.

It is an amenable number.

65700513 is a deficient number, since it is larger than the sum of its proper divisors (30072307).

65700513 is a wasteful number, since it uses less digits than its factorization.

65700513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67088 (or 67085 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 65700513 is about 8105.5852965717. The cubic root of 65700513 is about 403.5118131080.

The spelling of 65700513 in words is "sixty-five million, seven hundred thousand, five hundred thirteen".