87159906 has 24 divisors (see below), whose sum is σ = 195359580. Its totient is φ = 28051296.

The previous prime is 87159893. The next prime is 87159923. The reversal of 87159906 is 60995178.

It can be written as a sum of positive squares in 2 ways, for example, as 86322681 + 837225 = 9291^2 + 915^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 82965 + ... + 84008.

Almost surely, 2^87159906 is an apocalyptic number.

87159906 is an abundant number, since it is smaller than the sum of its proper divisors (108199674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87159906 is a wasteful number, since it uses less digits than its factorization.

87159906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167010 (or 167007 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 87159906 is about 9335.9469792839. The cubic root of 87159906 is about 443.3760715326.

The spelling of 87159906 in words is "eighty-seven million, one hundred fifty-nine thousand, nine hundred six".