7940866 has 8 divisors (see below), whose sum is σ = 12233340. Its totient is φ = 3863088.

The previous prime is 7940857. The next prime is 7940893. The reversal of 7940866 is 6680497.

It can be written as a sum of positive squares in 2 ways, for example, as 7924225 + 16641 = 2815^2 + 129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53581 + ... + 53728.

Almost surely, 2^7940866 is an apocalyptic number.

7940866 is a deficient number, since it is larger than the sum of its proper divisors (4292474).

7940866 is a wasteful number, since it uses less digits than its factorization.

7940866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107348.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 7940866 is about 2817.9542224813. The cubic root of 7940866 is about 199.5059974788.

The spelling of 7940866 in words is "seven million, nine hundred forty thousand, eight hundred sixty-six".