65312913 has 8 divisors (see below), whose sum is σ = 87982048. Its totient is φ = 43092864.

The previous prime is 65312911. The next prime is 65312927. The reversal of 65312913 is 31921356.

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

It is not a de Polignac number, because 65312913 - 2¹ = 65312911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65312911) 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, 111931 + ... + 112512.

It is an arithmetic number, because the mean of its divisors is an integer number (10997756).

Almost surely, 2^65312913 is an apocalyptic number.

It is an amenable number.

65312913 is a deficient number, since it is larger than the sum of its proper divisors (22669135).

65312913 is a wasteful number, since it uses less digits than its factorization.

65312913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224543.

The product of its digits is 4860, while the sum is 30.

The square root of 65312913 is about 8081.6404894056. The cubic root of 65312913 is about 402.7167419261.

The spelling of 65312913 in words is "sixty-five million, three hundred twelve thousand, nine hundred thirteen".