87977623 has 4 divisors (see below), whose sum is σ = 88147008. Its totient is φ = 87808240.

The previous prime is 87977587. The next prime is 87977627. The reversal of 87977623 is 32677978.

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-87977623 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 (87977627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83911 + ... + 84952.

It is an arithmetic number, because the mean of its divisors is an integer number (22036752).

Almost surely, 2^87977623 is an apocalyptic number.

87977623 is a deficient number, since it is larger than the sum of its proper divisors (169385).

87977623 is a wasteful number, since it uses less digits than its factorization.

87977623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169384.

The product of its digits is 889056, while the sum is 49.

The square root of 87977623 is about 9379.6387457087. The cubic root of 87977623 is about 444.7583134007.

The spelling of 87977623 in words is "eighty-seven million, nine hundred seventy-seven thousand, six hundred twenty-three".