7945686 has 48 divisors (see below), whose sum is σ = 20716800. Its totient is φ = 2150064.

The previous prime is 7945661. The next prime is 7945687. The reversal of 7945686 is 6865497.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7945687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 735 + ... + 4053.

It is an arithmetic number, because the mean of its divisors is an integer number (431600).

Almost surely, 2^7945686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7945686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10358400).

7945686 is an abundant number, since it is smaller than the sum of its proper divisors (12771114).

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

7945686 is a wasteful number, since it uses less digits than its factorization.

7945686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353 (or 3350 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 7945686 is about 2818.8093231008. The cubic root of 7945686 is about 199.5463551430.

The spelling of 7945686 in words is "seven million, nine hundred forty-five thousand, six hundred eighty-six".