7868406 has 32 divisors (see below), whose sum is σ = 19369728. Its totient is φ = 2075040.

The previous prime is 7868381. The next prime is 7868423. The reversal of 7868406 is 6048687.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6660 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (605304).

Almost surely, 2^7868406 is an apocalyptic number.

7868406 is an abundant number, since it is smaller than the sum of its proper divisors (11501322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7868406 is a wasteful number, since it uses less digits than its factorization.

7868406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14436.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 7868406 is about 2805.0679136164. The cubic root of 7868406 is about 198.8973149347.

The spelling of 7868406 in words is "seven million, eight hundred sixty-eight thousand, four hundred six".