87671599 has 4 divisors (see below), whose sum is σ = 87747640. Its totient is φ = 87595560.

The previous prime is 87671587. The next prime is 87671629. The reversal of 87671599 is 99517678.

It is a happy number.

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-87671599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87671569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36264 + ... + 38605.

It is an arithmetic number, because the mean of its divisors is an integer number (21936910).

Almost surely, 2^87671599 is an apocalyptic number.

87671599 is a deficient number, since it is larger than the sum of its proper divisors (76041).

87671599 is a wasteful number, since it uses less digits than its factorization.

87671599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76040.

The product of its digits is 952560, while the sum is 52.

The square root of 87671599 is about 9363.3113266622. The cubic root of 87671599 is about 444.2420274343.

The spelling of 87671599 in words is "eighty-seven million, six hundred seventy-one thousand, five hundred ninety-nine".