65767231 has 2 divisors, whose sum is σ = 65767232. Its totient is φ = 65767230.

The previous prime is 65767217. The next prime is 65767277. The reversal of 65767231 is 13276756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65767231 - 2⁹ = 65766719 is a prime.

It is a super-2 number, since 2×65767231² = 8650657346814722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65767931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32883615 + 32883616.

It is an arithmetic number, because the mean of its divisors is an integer number (32883616).

Almost surely, 2^65767231 is an apocalyptic number.

65767231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65767231 is an equidigital number, since it uses as much as digits as its factorization.

65767231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 65767231 is about 8109.6998094874. The cubic root of 65767231 is about 403.6483538657.

The spelling of 65767231 in words is "sixty-five million, seven hundred sixty-seven thousand, two hundred thirty-one".