87686607097 has 4 divisors (see below), whose sum is σ = 88245120676. Its totient is φ = 87128093520.

The previous prime is 87686607091. The next prime is 87686607101. The reversal of 87686607097 is 79070668678.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15611003136 + 72075603961 = 124944^2 + 268469^2 .

It is a cyclic number.

It is not a de Polignac number, because 87686607097 - 2²⁷ = 87552389369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87686607091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279256554 + ... + 279256867.

It is an arithmetic number, because the mean of its divisors is an integer number (22061280169).

Almost surely, 2^87686607097 is an apocalyptic number.

It is an amenable number.

87686607097 is a deficient number, since it is larger than the sum of its proper divisors (558513579).

87686607097 is a wasteful number, since it uses less digits than its factorization.

87686607097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558513578.

The product of its (nonzero) digits is 42674688, while the sum is 64.

The spelling of 87686607097 in words is "eighty-seven billion, six hundred eighty-six million, six hundred seven thousand, ninety-seven".