97222656 has 128 divisors (see below), whose sum is σ = 276819840. Its totient is φ = 30277632.

The previous prime is 97222651. The next prime is 97222687. The reversal of 97222656 is 65622279.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97222651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260971 + ... + 2261013.

It is an arithmetic number, because the mean of its divisors is an integer number (2162655).

Almost surely, 2^97222656 is an apocalyptic number.

97222656 is a gapful number since it is divisible by the number (96) 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 97222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138409920).

97222656 is an abundant number, since it is smaller than the sum of its proper divisors (179597184).

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

97222656 is an equidigital number, since it uses as much as digits as its factorization.

97222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 71 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 97222656 is about 9860.1549683562. The cubic root of 97222656 is about 459.8213799254.

The spelling of 97222656 in words is "ninety-seven million, two hundred twenty-two thousand, six hundred fifty-six".