765264997 has 12 divisors (see below), whose sum is σ = 890665356. Its totient is φ = 655603200.

The previous prime is 765264989. The next prime is 765265001. The reversal of 765264997 is 799462567.

It can be written as a sum of positive squares in 2 ways, for example, as 655308801 + 109956196 = 25599^2 + 10486^2 .

It is not a de Polignac number, because 765264997 - 2³ = 765264989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765264697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156997 + ... + 161797.

It is an arithmetic number, because the mean of its divisors is an integer number (74222113).

Almost surely, 2^765264997 is an apocalyptic number.

It is an amenable number.

765264997 is a deficient number, since it is larger than the sum of its proper divisors (125400359).

765264997 is a wasteful number, since it uses less digits than its factorization.

765264997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068 (or 8061 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 55.

The square root of 765264997 is about 27663.4234504698. The cubic root of 765264997 is about 914.6830187911.

The spelling of 765264997 in words is "seven hundred sixty-five million, two hundred sixty-four thousand, nine hundred ninety-seven".