764161249 has 2 divisors, whose sum is σ = 764161250. Its totient is φ = 764161248.

The previous prime is 764161201. The next prime is 764161273. The reversal of 764161249 is 942161467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738100224 + 26061025 = 27168^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 764161249 - 2⁹ = 764160737 is a prime.

It is not a weakly prime, because it can be changed into another prime (764161949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382080624 + 382080625.

It is an arithmetic number, because the mean of its divisors is an integer number (382080625).

Almost surely, 2^764161249 is an apocalyptic number.

It is an amenable number.

764161249 is a deficient number, since it is larger than the sum of its proper divisors (1).

764161249 is an equidigital number, since it uses as much as digits as its factorization.

764161249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 764161249 is about 27643.4666603160. The cubic root of 764161249 is about 914.2430555885.

The spelling of 764161249 in words is "seven hundred sixty-four million, one hundred sixty-one thousand, two hundred forty-nine".