97688587 has 4 divisors (see below), whose sum is σ = 97710256. Its totient is φ = 97666920.

The previous prime is 97688551. The next prime is 97688597. The reversal of 97688587 is 78588679.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97688587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97688537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239 + ... + 14032.

It is an arithmetic number, because the mean of its divisors is an integer number (24427564).

Almost surely, 2^97688587 is an apocalyptic number.

97688587 is a deficient number, since it is larger than the sum of its proper divisors (21669).

97688587 is a wasteful number, since it uses less digits than its factorization.

97688587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21668.

The product of its digits is 6773760, while the sum is 58.

The square root of 97688587 is about 9883.7536897679. The cubic root of 97688587 is about 460.5547607454.

The spelling of 97688587 in words is "ninety-seven million, six hundred eighty-eight thousand, five hundred eighty-seven".