65613137 has 8 divisors (see below), whose sum is σ = 69281760. Its totient is φ = 61966080.

The previous prime is 65613127. The next prime is 65613139. The reversal of 65613137 is 73131656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65613137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65613139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073 + ... + 11505.

It is an arithmetic number, because the mean of its divisors is an integer number (8660220).

Almost surely, 2^65613137 is an apocalyptic number.

It is an amenable number.

65613137 is a deficient number, since it is larger than the sum of its proper divisors (3668623).

65613137 is a wasteful number, since it uses less digits than its factorization.

65613137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783.

The product of its digits is 11340, while the sum is 32.

The square root of 65613137 is about 8100.1936396607. The cubic root of 65613137 is about 403.3328551475.

The spelling of 65613137 in words is "sixty-five million, six hundred thirteen thousand, one hundred thirty-seven".