7981626 has 16 divisors (see below), whose sum is σ = 16122528. Its totient is φ = 2634000.

The previous prime is 7981591. The next prime is 7981627. The reversal of 7981626 is 6261897.

It is not an unprimeable number, because it can be changed into a prime (7981627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5980 + ... + 7191.

It is an arithmetic number, because the mean of its divisors is an integer number (1007658).

Almost surely, 2^7981626 is an apocalyptic number.

7981626 is an abundant number, since it is smaller than the sum of its proper divisors (8140902).

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

7981626 is a wasteful number, since it uses less digits than its factorization.

7981626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13277.

The product of its digits is 36288, while the sum is 39.

The square root of 7981626 is about 2825.1771625864. The cubic root of 7981626 is about 199.8467659600.

The spelling of 7981626 in words is "seven million, nine hundred eighty-one thousand, six hundred twenty-six".