65731963 has 12 divisors (see below), whose sum is σ = 75684888. Its totient is φ = 56607840.

The previous prime is 65731957. The next prime is 65731973. The reversal of 65731963 is 36913756.

It is not a de Polignac number, because 65731963 - 2²¹ = 63634811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65731973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4306 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (6307074).

Almost surely, 2^65731963 is an apocalyptic number.

65731963 is a deficient number, since it is larger than the sum of its proper divisors (9952925).

65731963 is a wasteful number, since it uses less digits than its factorization.

65731963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16602 (or 16583 counting only the distinct ones).

The product of its digits is 102060, while the sum is 40.

The square root of 65731963 is about 8107.5250847592. The cubic root of 65731963 is about 403.5761881616.

The spelling of 65731963 in words is "sixty-five million, seven hundred thirty-one thousand, nine hundred sixty-three".