97858857 has 4 divisors (see below), whose sum is σ = 130478480. Its totient is φ = 65239236.

The previous prime is 97858811. The next prime is 97858861. The reversal of 97858857 is 75885879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 97858857 - 2¹² = 97854761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97858797 and 97858806.

It is not an unprimeable number, because it can be changed into a prime (97858877) 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, 16309807 + ... + 16309812.

It is an arithmetic number, because the mean of its divisors is an integer number (32619620).

Almost surely, 2^97858857 is an apocalyptic number.

It is an amenable number.

97858857 is a deficient number, since it is larger than the sum of its proper divisors (32619623).

97858857 is a wasteful number, since it uses less digits than its factorization.

97858857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32619622.

The product of its digits is 5644800, while the sum is 57.

The square root of 97858857 is about 9892.3635699463. The cubic root of 97858857 is about 460.8221858516.

The spelling of 97858857 in words is "ninety-seven million, eight hundred fifty-eight thousand, eight hundred fifty-seven".