65634731 has 2 divisors, whose sum is σ = 65634732. Its totient is φ = 65634730.

The previous prime is 65634713. The next prime is 65634733. The reversal of 65634731 is 13743656.

Together with previous prime (65634713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65634731 is a prime.

It is a super-2 number, since 2×65634731² = 8615835826884722, which contains 22 as substring.

Together with 65634733, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3875822 and since 65634731 and 3875822 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 65634691 and 65634700.

It is not a weakly prime, because it can be changed into another prime (65634733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32817365 + 32817366.

It is an arithmetic number, because the mean of its divisors is an integer number (32817366).

Almost surely, 2^65634731 is an apocalyptic number.

65634731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65634731 is an equidigital number, since it uses as much as digits as its factorization.

65634731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 65634731 is about 8101.5264611060. The cubic root of 65634731 is about 403.3770973769.

The spelling of 65634731 in words is "sixty-five million, six hundred thirty-four thousand, seven hundred thirty-one".