65393631 has 12 divisors (see below), whose sum is σ = 94812120. Its totient is φ = 43432080.

The previous prime is 65393609. The next prime is 65393633. The reversal of 65393631 is 13639356.

It is not a de Polignac number, because 65393631 - 2⁵ = 65393599 is a prime.

It is a super-2 number, since 2×65393631² = 8552653950728322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65393633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11085 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (7901010).

Almost surely, 2^65393631 is an apocalyptic number.

65393631 is a deficient number, since it is larger than the sum of its proper divisors (29418489).

65393631 is a wasteful number, since it uses less digits than its factorization.

65393631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27286 (or 27283 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 65393631 is about 8086.6328592313. The cubic root of 65393631 is about 402.8825749212.

The spelling of 65393631 in words is "sixty-five million, three hundred ninety-three thousand, six hundred thirty-one".