97796556 has 144 divisors (see below), whose sum is σ = 294691488. Its totient is φ = 27181440.

The previous prime is 97796533. The next prime is 97796561. The reversal of 97796556 is 65569779.

It is a super-2 number, since 2×97796556² = 19128332730922272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 622830 + ... + 622986.

Almost surely, 2^97796556 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 97796556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147345744).

97796556 is an abundant number, since it is smaller than the sum of its proper divisors (196894932).

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

97796556 is a wasteful number, since it uses less digits than its factorization.

97796556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 186 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 54.

The square root of 97796556 is about 9889.2141244894. The cubic root of 97796556 is about 460.7243722637.

The spelling of 97796556 in words is "ninety-seven million, seven hundred ninety-six thousand, five hundred fifty-six".