764323129 has 2 divisors, whose sum is σ = 764323130. Its totient is φ = 764323128.

The previous prime is 764323121. The next prime is 764323187. The reversal of 764323129 is 921323467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 737231104 + 27092025 = 27152^2 + 5205^2 .

It is an emirp because it is prime and its reverse (921323467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764323129 - 2³ = 764323121 is a prime.

It is not a weakly prime, because it can be changed into another prime (764323121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382161564 + 382161565.

It is an arithmetic number, because the mean of its divisors is an integer number (382161565).

Almost surely, 2^764323129 is an apocalyptic number.

It is an amenable number.

764323129 is a deficient number, since it is larger than the sum of its proper divisors (1).

764323129 is an equidigital number, since it uses as much as digits as its factorization.

764323129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 764323129 is about 27646.3945027195. The cubic root of 764323129 is about 914.3076088123.

The spelling of 764323129 in words is "seven hundred sixty-four million, three hundred twenty-three thousand, one hundred twenty-nine".