7991364 has 12 divisors (see below), whose sum is σ = 18646544. Its totient is φ = 2663784.

The previous prime is 7991341. The next prime is 7991369. The reversal of 7991364 is 4631997.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7991369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332962 + ... + 332985.

Almost surely, 2^7991364 is an apocalyptic number.

It is an amenable number.

7991364 is an abundant number, since it is smaller than the sum of its proper divisors (10655180).

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

7991364 is a wasteful number, since it uses less digits than its factorization.

7991364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665954 (or 665952 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 7991364 is about 2826.9000689802. The cubic root of 7991364 is about 199.9280074218.

The spelling of 7991364 in words is "seven million, nine hundred ninety-one thousand, three hundred sixty-four".