764485613 has 4 divisors (see below), whose sum is σ = 775253088. Its totient is φ = 753718140.

The previous prime is 764485609. The next prime is 764485627. The reversal of 764485613 is 316584467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 764485613 - 2² = 764485609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764485643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5383631 + ... + 5383772.

It is an arithmetic number, because the mean of its divisors is an integer number (193813272).

Almost surely, 2^764485613 is an apocalyptic number.

It is an amenable number.

764485613 is a deficient number, since it is larger than the sum of its proper divisors (10767475).

764485613 is a wasteful number, since it uses less digits than its factorization.

764485613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767474.

The product of its digits is 483840, while the sum is 44.

The square root of 764485613 is about 27649.3329575959. The cubic root of 764485613 is about 914.3723937294.

The spelling of 764485613 in words is "seven hundred sixty-four million, four hundred eighty-five thousand, six hundred thirteen".