6390763215 has 12 divisors (see below), whose sum is σ = 10225716552. Its totient is φ = 3408241920.

The previous prime is 6390763207. The next prime is 6390763241. The reversal of 6390763215 is 5123670936.

It is not a de Polignac number, because 6390763215 - 2³ = 6390763207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299295 + ... + 319935.

It is an arithmetic number, because the mean of its divisors is an integer number (852143046).

Almost surely, 2^6390763215 is an apocalyptic number.

6390763215 is a deficient number, since it is larger than the sum of its proper divisors (3834953337).

6390763215 is an frugal number, since it uses more digits than its factorization.

6390763215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41290 (or 20649 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 6390763215 is about 79942.2492490673. The cubic root of 6390763215 is about 1855.7419084390.

The spelling of 6390763215 in words is "six billion, three hundred ninety million, seven hundred sixty-three thousand, two hundred fifteen".