97198857 has 48 divisors (see below), whose sum is σ = 167212032.
Its totient is φ = 53239680.
The previous prime is 97198847. The next prime is 97198859. The reversal of 97198857 is 75889179.
It is not a de Polignac number, because 97198857 - 24 = 97198841 is a prime.
It is not an unprimeable number, because it can be changed into a prime (97198859) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 306463 + ... + 306779.
It is an arithmetic number, because the mean of its divisors is an integer number (3483584).
Almost surely, 297198857 is an apocalyptic number.
It is an amenable number.
97198857 is a deficient number, since it is larger than the sum of its proper divisors (70013175).
97198857 is a wasteful number, since it uses less digits than its factorization.
97198857 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 518 (or 515 counting only the distinct ones).
The product of its digits is 1270080, while the sum is 54.
The square root of 97198857 is about 9858.9480676186.
The cubic root of 97198857 is about 459.7838571828.
The spelling of 97198857 in words is "ninety-seven million, one hundred ninety-eight thousand, eight hundred fifty-seven".