7279864 has 16 divisors (see below), whose sum is σ = 13734000. Its totient is φ = 3617472.

The previous prime is 7279849. The next prime is 7279879. The reversal of 7279864 is 4689727.

It is an interprime number because it is at equal distance from previous prime (7279849) and next prime (7279879).

It is a self number, because there is not a number n which added to its sum of digits gives 7279864.

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 3 ways as a sum of consecutive naturals, for example, 1389 + ... + 4060.

It is an arithmetic number, because the mean of its divisors is an integer number (858375).

Almost surely, 2^7279864 is an apocalyptic number.

It is an amenable number.

7279864 is a deficient number, since it is larger than the sum of its proper divisors (6454136).

7279864 is a wasteful number, since it uses less digits than its factorization.

7279864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622 (or 5618 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 7279864 is about 2698.1223100519. The cubic root of 7279864 is about 193.8092147831.

The spelling of 7279864 in words is "seven million, two hundred seventy-nine thousand, eight hundred sixty-four".