65641413 has 16 divisors (see below), whose sum is σ = 90748800. Its totient is φ = 42154560.

The previous prime is 65641399. The next prime is 65641427. The reversal of 65641413 is 31414656.

It is an interprime number because it is at equal distance from previous prime (65641399) and next prime (65641427).

It is not a de Polignac number, because 65641413 - 2⁸ = 65641157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65642413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70968 + ... + 71886.

It is an arithmetic number, because the mean of its divisors is an integer number (5671800).

Almost surely, 2^65641413 is an apocalyptic number.

It is an amenable number.

65641413 is a deficient number, since it is larger than the sum of its proper divisors (25107387).

65641413 is a wasteful number, since it uses less digits than its factorization.

65641413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772.

The product of its digits is 8640, while the sum is 30.

The square root of 65641413 is about 8101.9388420303. The cubic root of 65641413 is about 403.3907856293.

The spelling of 65641413 in words is "sixty-five million, six hundred forty-one thousand, four hundred thirteen".