6390603657 has 12 divisors (see below), whose sum is σ = 9232619760. Its totient is φ = 4259595768.

The previous prime is 6390603649. The next prime is 6390603683. The reversal of 6390603657 is 7563060936.

6390603657 is a `hidden beast` number, since 6 + 39 + 0 + 603 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 6390603657 - 2³ = 6390603649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6390603617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14907 + ... + 114032.

It is an arithmetic number, because the mean of its divisors is an integer number (769384980).

Almost surely, 2^6390603657 is an apocalyptic number.

It is an amenable number.

6390603657 is a deficient number, since it is larger than the sum of its proper divisors (2842016103).

6390603657 is a wasteful number, since it uses less digits than its factorization.

6390603657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134452 (or 134449 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The square root of 6390603657 is about 79941.2512849280. The cubic root of 6390603657 is about 1855.7264642257.

The spelling of 6390603657 in words is "six billion, three hundred ninety million, six hundred three thousand, six hundred fifty-seven".