7216656 has 80 divisors (see below), whose sum is σ = 20207040. Its totient is φ = 2211840.

The previous prime is 7216633. The next prime is 7216661. The reversal of 7216656 is 6566127.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37296 + ... + 37488.

It is an arithmetic number, because the mean of its divisors is an integer number (252588).

Almost surely, 2^7216656 is an apocalyptic number.

7216656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7216656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10103520).

7216656 is an abundant number, since it is smaller than the sum of its proper divisors (12990384).

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

7216656 is a wasteful number, since it uses less digits than its factorization.

7216656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 258 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 7216656 is about 2686.3834424743. The cubic root of 7216656 is about 193.2466621685.

The spelling of 7216656 in words is "seven million, two hundred sixteen thousand, six hundred fifty-six".