97642218 has 48 divisors (see below), whose sum is σ = 204755040. Its totient is φ = 31029024.

The previous prime is 97642213. The next prime is 97642231. The reversal of 97642218 is 81224679.

It is not an unprimeable number, because it can be changed into a prime (97642211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702393 + ... + 702531.

It is an arithmetic number, because the mean of its divisors is an integer number (4265730).

Almost surely, 2^97642218 is an apocalyptic number.

97642218 is an abundant number, since it is smaller than the sum of its proper divisors (107112822).

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

97642218 is a wasteful number, since it uses less digits than its factorization.

97642218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 244 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 97642218 is about 9881.4076932389. The cubic root of 97642218 is about 460.4818800261.

The spelling of 97642218 in words is "ninety-seven million, six hundred forty-two thousand, two hundred eighteen".