97718632 has 72 divisors (see below), whose sum is σ = 211928850. Its totient is φ = 42159040.

The previous prime is 97718627. The next prime is 97718633. The reversal of 97718632 is 23681779.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82555396 + 15163236 = 9086^2 + 3894^2 .

It is not an unprimeable number, because it can be changed into a prime (97718633) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1656219 + ... + 1656277.

Almost surely, 2^97718632 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 97718632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105964425).

97718632 is an abundant number, since it is smaller than the sum of its proper divisors (114210218).

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

97718632 is a wasteful number, since it uses less digits than its factorization.

97718632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 101 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 97718632 is about 9885.2734914114. The cubic root of 97718632 is about 460.6019718197.

The spelling of 97718632 in words is "ninety-seven million, seven hundred eighteen thousand, six hundred thirty-two".