7791216 has 40 divisors (see below), whose sum is σ = 21189120. Its totient is φ = 2460096.

The previous prime is 7791139. The next prime is 7791233. The reversal of 7791216 is 6121977.

7791216 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (529728).

Almost surely, 2^7791216 is an apocalyptic number.

7791216 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7791216 is an abundant number, since it is smaller than the sum of its proper divisors (13397904).

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

7791216 is a wasteful number, since it uses less digits than its factorization.

7791216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8573 (or 8567 counting only the distinct ones).

The product of its digits is 5292, while the sum is 33.

The square root of 7791216 is about 2791.2749774968. The cubic root of 7791216 is about 198.2447743100.

The spelling of 7791216 in words is "seven million, seven hundred ninety-one thousand, two hundred sixteen".