6387456897 has 12 divisors (see below), whose sum is σ = 9228201684. Its totient is φ = 4257439200.

The previous prime is 6387456893. The next prime is 6387456899. The reversal of 6387456897 is 7986547836.

6387456897 is a `hidden beast` number, since 63 + 8 + 7 + 4 + 568 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3222719361 + 3164737536 = 56769^2 + 56256^2 .

It is not a de Polignac number, because 6387456897 - 2² = 6387456893 is a prime.

It is a super-2 number, since 2×6387456897² = 81599211222065737218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6387456893) 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, 23658 + ... + 115475.

It is an arithmetic number, because the mean of its divisors is an integer number (769016807).

Almost surely, 2^6387456897 is an apocalyptic number.

It is an amenable number.

6387456897 is a deficient number, since it is larger than the sum of its proper divisors (2840744787).

6387456897 is a wasteful number, since it uses less digits than its factorization.

6387456897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144240 (or 144237 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The square root of 6387456897 is about 79921.5671580582. The cubic root of 6387456897 is about 1855.4218250578.

The spelling of 6387456897 in words is "six billion, three hundred eighty-seven million, four hundred fifty-six thousand, eight hundred ninety-seven".