97995857 has 4 divisors (see below), whose sum is σ = 99338340. Its totient is φ = 96653376.

The previous prime is 97995851. The next prime is 97995883. The reversal of 97995857 is 75859979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75859979 = 13 ⋅5835383.

It can be written as a sum of positive squares in 2 ways, for example, as 39488656 + 58507201 = 6284^2 + 7649^2 .

It is a cyclic number.

It is not a de Polignac number, because 97995857 - 2¹⁴ = 97979473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97995796 and 97995805.

It is not an unprimeable number, because it can be changed into a prime (97995851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671132 + ... + 671277.

It is an arithmetic number, because the mean of its divisors is an integer number (24834585).

Almost surely, 2^97995857 is an apocalyptic number.

It is an amenable number.

97995857 is a deficient number, since it is larger than the sum of its proper divisors (1342483).

97995857 is a wasteful number, since it uses less digits than its factorization.

97995857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342482.

The product of its digits is 7144200, while the sum is 59.

The square root of 97995857 is about 9899.2856813004. The cubic root of 97995857 is about 461.0371321627.

The spelling of 97995857 in words is "ninety-seven million, nine hundred ninety-five thousand, eight hundred fifty-seven".