97987137 has 16 divisors (see below), whose sum is σ = 134753472. Its totient is φ = 63288000.

The previous prime is 97987117. The next prime is 97987139. The reversal of 97987137 is 73178979.

It is a happy number.

It is not a de Polignac number, because 97987137 - 2⁶ = 97987073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97987137.

It is not an unprimeable number, because it can be changed into a prime (97987139) 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 15 ways as a sum of consecutive naturals, for example, 26103 + ... + 29619.

It is an arithmetic number, because the mean of its divisors is an integer number (8422092).

Almost surely, 2^97987137 is an apocalyptic number.

It is an amenable number.

97987137 is a deficient number, since it is larger than the sum of its proper divisors (36766335).

97987137 is a wasteful number, since it uses less digits than its factorization.

97987137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808.

The product of its digits is 666792, while the sum is 51.

The square root of 97987137 is about 9898.8452356828. The cubic root of 97987137 is about 461.0234568804.

The spelling of 97987137 in words is "ninety-seven million, nine hundred eighty-seven thousand, one hundred thirty-seven".