87159903 has 8 divisors (see below), whose sum is σ = 121266048. Its totient is φ = 55580184.

The previous prime is 87159893. The next prime is 87159923. The reversal of 87159903 is 30995178.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87159903 - 2⁸ = 87159647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87159923) 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, 631525 + ... + 631662.

It is an arithmetic number, because the mean of its divisors is an integer number (15158256).

Almost surely, 2^87159903 is an apocalyptic number.

87159903 is a deficient number, since it is larger than the sum of its proper divisors (34106145).

87159903 is a wasteful number, since it uses less digits than its factorization.

87159903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263213.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 87159903 is about 9335.9468186146. The cubic root of 87159903 is about 443.3760664457.

The spelling of 87159903 in words is "eighty-seven million, one hundred fifty-nine thousand, nine hundred three".