65768531 has 2 divisors, whose sum is σ = 65768532. Its totient is φ = 65768530.

The previous prime is 65768509. The next prime is 65768533. The reversal of 65768531 is 13586756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65768531 - 2⁶ = 65768467 is a prime.

It is a super-2 number, since 2×65768531² = 8650999339795922, which contains 22 as substring.

Together with 65768533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65768533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32884265 + 32884266.

It is an arithmetic number, because the mean of its divisors is an integer number (32884266).

Almost surely, 2^65768531 is an apocalyptic number.

65768531 is a deficient number, since it is larger than the sum of its proper divisors (1).

65768531 is an equidigital number, since it uses as much as digits as its factorization.

65768531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 65768531 is about 8109.7799600236. The cubic root of 65768531 is about 403.6510134445.

The spelling of 65768531 in words is "sixty-five million, seven hundred sixty-eight thousand, five hundred thirty-one".