764502131 has 2 divisors, whose sum is σ = 764502132. Its totient is φ = 764502130.

The previous prime is 764502097. The next prime is 764502133. The reversal of 764502131 is 131205467.

It is a strong prime.

It is an emirp because it is prime and its reverse (131205467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764502131 - 2¹⁴ = 764485747 is a prime.

It is a super-2 number, since 2×764502131² = 1168927016607082322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 764502133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 764502094 and 764502103.

It is not a weakly prime, because it can be changed into another prime (764502133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382251065 + 382251066.

It is an arithmetic number, because the mean of its divisors is an integer number (382251066).

Almost surely, 2^764502131 is an apocalyptic number.

764502131 is a deficient number, since it is larger than the sum of its proper divisors (1).

764502131 is an equidigital number, since it uses as much as digits as its factorization.

764502131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 764502131 is about 27649.6316611994. The cubic root of 764502131 is about 914.3789792008.

Adding to 764502131 its reverse (131205467), we get a palindrome (895707598).

The spelling of 764502131 in words is "seven hundred sixty-four million, five hundred two thousand, one hundred thirty-one".