87973601 has 4 divisors (see below), whose sum is σ = 88223172. Its totient is φ = 87724032.

The previous prime is 87973583. The next prime is 87973631. The reversal of 87973601 is 10637978.

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 15808576 + 72165025 = 3976^2 + 8495^2 .

It is a cyclic number.

It is not a de Polignac number, because 87973601 - 2²⁶ = 20864737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87973631) 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, 124256 + ... + 124961.

It is an arithmetic number, because the mean of its divisors is an integer number (22055793).

Almost surely, 2^87973601 is an apocalyptic number.

It is an amenable number.

87973601 is a deficient number, since it is larger than the sum of its proper divisors (249571).

87973601 is a wasteful number, since it uses less digits than its factorization.

87973601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249570.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 87973601 is about 9379.4243426769. The cubic root of 87973601 is about 444.7515357485.

The spelling of 87973601 in words is "eighty-seven million, nine hundred seventy-three thousand, six hundred one".