776320564 has 24 divisors (see below), whose sum is σ = 1419203520. Its totient is φ = 370871424.

The previous prime is 776320561. The next prime is 776320577. The reversal of 776320564 is 465023677.

776320564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776320561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88647 + ... + 97009.

It is an arithmetic number, because the mean of its divisors is an integer number (59133480).

Almost surely, 2^776320564 is an apocalyptic number.

It is an amenable number.

776320564 is a deficient number, since it is larger than the sum of its proper divisors (642882956).

776320564 is a wasteful number, since it uses less digits than its factorization.

776320564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399 (or 9397 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 776320564 is about 27862.5297487504. The cubic root of 776320564 is about 919.0666984523.

The spelling of 776320564 in words is "seven hundred seventy-six million, three hundred twenty thousand, five hundred sixty-four".