402765697 has 2 divisors, whose sum is σ = 402765698. Its totient is φ = 402765696.

The previous prime is 402765689. The next prime is 402765703. The reversal of 402765697 is 796567204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402564096 + 201601 = 20064^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 402765697 - 2³ = 402765689 is a prime.

It is not a weakly prime, because it can be changed into another prime (402765637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201382848 + 201382849.

It is an arithmetic number, because the mean of its divisors is an integer number (201382849).

Almost surely, 2^402765697 is an apocalyptic number.

It is an amenable number.

402765697 is a deficient number, since it is larger than the sum of its proper divisors (1).

402765697 is an equidigital number, since it uses as much as digits as its factorization.

402765697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 402765697 is about 20069.0233195340. The cubic root of 402765697 is about 738.5005533577.

The spelling of 402765697 in words is "four hundred two million, seven hundred sixty-five thousand, six hundred ninety-seven".