7868457 has 12 divisors (see below), whose sum is σ = 11673220. Its totient is φ = 5103648.

The previous prime is 7868453. The next prime is 7868477. The reversal of 7868457 is 7548687.

It can be written as a sum of positive squares in 2 ways, for example, as 3111696 + 4756761 = 1764^2 + 2181^2 .

It is not a de Polignac number, because 7868457 - 2² = 7868453 is a prime.

It is a Duffinian number.

7868457 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7868453) 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, 11482 + ... + 12147.

Almost surely, 2^7868457 is an apocalyptic number.

It is an amenable number.

7868457 is a deficient number, since it is larger than the sum of its proper divisors (3804763).

7868457 is a wasteful number, since it uses less digits than its factorization.

7868457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23672 (or 23669 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 7868457 is about 2805.0770042906. The cubic root of 7868457 is about 198.8977446592.

The spelling of 7868457 in words is "seven million, eight hundred sixty-eight thousand, four hundred fifty-seven".