6379820264 has 8 divisors (see below), whose sum is σ = 11962163010. Its totient is φ = 3189910128.

The previous prime is 6379820257. The next prime is 6379820269. The reversal of 6379820264 is 4620289736.

It can be written as a sum of positive squares in only one way, i.e., 4686497764 + 1693322500 = 68458^2 + 41150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6379820269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398738759 + ... + 398738774.

Almost surely, 2^6379820264 is an apocalyptic number.

It is an amenable number.

6379820264 is a deficient number, since it is larger than the sum of its proper divisors (5582342746).

6379820264 is a wasteful number, since it uses less digits than its factorization.

6379820264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797477539 (or 797477535 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 6379820264 is about 79873.7770735803. Note that the first 3 decimals coincide. The cubic root of 6379820264 is about 1854.6821031177.

The spelling of 6379820264 in words is "six billion, three hundred seventy-nine million, eight hundred twenty thousand, two hundred sixty-four".