7317864 has 80 divisors (see below), whose sum is σ = 21431520. Its totient is φ = 2328480.

The previous prime is 7317859. The next prime is 7317881. The reversal of 7317864 is 4687137.

It is a super-2 number, since 2×7317864² = 107102267044992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 14659 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (267894).

Almost surely, 2^7317864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7317864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10715760).

7317864 is an abundant number, since it is smaller than the sum of its proper divisors (14113656).

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

7317864 is a wasteful number, since it uses less digits than its factorization.

7317864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 519 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 7317864 is about 2705.1550787339. The cubic root of 7317864 is about 194.1458498644.

The spelling of 7317864 in words is "seven million, three hundred seventeen thousand, eight hundred sixty-four".