87418623 has 4 divisors (see below), whose sum is σ = 116558168. Its totient is φ = 58279080.

The previous prime is 87418619. The next prime is 87418627. The reversal of 87418623 is 32681478.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87418619) and next prime (87418627).

It is not a de Polignac number, because 87418623 - 2² = 87418619 is a prime.

It is a super-2 number, since 2×87418623² = 15284031294432258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87418627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14569768 + ... + 14569773.

It is an arithmetic number, because the mean of its divisors is an integer number (29139542).

Almost surely, 2^87418623 is an apocalyptic number.

87418623 is a deficient number, since it is larger than the sum of its proper divisors (29139545).

87418623 is a wasteful number, since it uses less digits than its factorization.

87418623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29139544.

The product of its digits is 64512, while the sum is 39.

The square root of 87418623 is about 9349.7926714981. The cubic root of 87418623 is about 443.8143296806.

The spelling of 87418623 in words is "eighty-seven million, four hundred eighteen thousand, six hundred twenty-three".