97647857 has 8 divisors (see below), whose sum is σ = 101999040. Its totient is φ = 93305520.

The previous prime is 97647853. The next prime is 97647899. The reversal of 97647857 is 75874679.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97647857 - 2² = 97647853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97647799 and 97647808.

It is not an unprimeable number, because it can be changed into a prime (97647853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31382 + ... + 34352.

It is an arithmetic number, because the mean of its divisors is an integer number (12749880).

Almost surely, 2^97647857 is an apocalyptic number.

It is an amenable number.

97647857 is a deficient number, since it is larger than the sum of its proper divisors (4351183).

97647857 is a wasteful number, since it uses less digits than its factorization.

97647857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423.

The product of its digits is 2963520, while the sum is 53.

The square root of 97647857 is about 9881.6930229592. The cubic root of 97647857 is about 460.4907443862.

The spelling of 97647857 in words is "ninety-seven million, six hundred forty-seven thousand, eight hundred fifty-seven".