97659881 has 8 divisors (see below), whose sum is σ = 106609728. Its totient is φ = 88722000.

The previous prime is 97659869. The next prime is 97659899. The reversal of 97659881 is 18895679.

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 97659881 - 2¹⁰ = 97658857 is a prime.

It is a super-2 number, since 2×97659881² = 19074904713868322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97659811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29111 + ... + 32291.

It is an arithmetic number, because the mean of its divisors is an integer number (13326216).

Almost surely, 2^97659881 is an apocalyptic number.

It is an amenable number.

97659881 is a deficient number, since it is larger than the sum of its proper divisors (8949847).

97659881 is a wasteful number, since it uses less digits than its factorization.

97659881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983.

The product of its digits is 1088640, while the sum is 53.

The square root of 97659881 is about 9882.3014020015. The cubic root of 97659881 is about 460.5096446592.

It can be divided in two parts, 976598 and 81, that added together give a palindrome (976679).

The spelling of 97659881 in words is "ninety-seven million, six hundred fifty-nine thousand, eight hundred eighty-one".