65944131 has 16 divisors (see below), whose sum is σ = 96054528. Its totient is φ = 39909600.

The previous prime is 65944127. The next prime is 65944133. The reversal of 65944131 is 13144956.

It is not a de Polignac number, because 65944131 - 2² = 65944127 is a prime.

It is a super-2 number, since 2×65944131² = 8697256826690322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 65944092 and 65944101.

It is not an unprimeable number, because it can be changed into a prime (65944133) 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, 44850 + ... + 46296.

It is an arithmetic number, because the mean of its divisors is an integer number (6003408).

Almost surely, 2^65944131 is an apocalyptic number.

65944131 is the 4341-st nonagonal number.

65944131 is a deficient number, since it is larger than the sum of its proper divisors (30110397).

65944131 is a wasteful number, since it uses less digits than its factorization.

65944131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its digits is 12960, while the sum is 33.

The square root of 65944131 is about 8120.5991774006. The cubic root of 65944131 is about 404.0099395489.

The spelling of 65944131 in words is "sixty-five million, nine hundred forty-four thousand, one hundred thirty-one".