764161477 has 4 divisors (see below), whose sum is σ = 769739436. Its totient is φ = 758583520.

The previous prime is 764161469. The next prime is 764161507. The reversal of 764161477 is 774161467.

764161477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359709156 + 404452321 = 18966^2 + 20111^2 .

It is a cyclic number.

It is not a de Polignac number, because 764161477 - 2³ = 764161469 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 (764171477) 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, 2788774 + ... + 2789047.

It is an arithmetic number, because the mean of its divisors is an integer number (192434859).

Almost surely, 2^764161477 is an apocalyptic number.

It is an amenable number.

764161477 is a deficient number, since it is larger than the sum of its proper divisors (5577959).

764161477 is a wasteful number, since it uses less digits than its factorization.

764161477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577958.

The product of its digits is 197568, while the sum is 43.

The square root of 764161477 is about 27643.4707842557. The cubic root of 764161477 is about 914.2431465149.

The spelling of 764161477 in words is "seven hundred sixty-four million, one hundred sixty-one thousand, four hundred seventy-seven".