87426559 has 4 divisors (see below), whose sum is σ = 95374440. Its totient is φ = 79478680.

The previous prime is 87426551. The next prime is 87426571. The reversal of 87426559 is 95562478.

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

It is a cyclic number.

It is not a de Polignac number, because 87426559 - 2³ = 87426551 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 (87426551) 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, 3973924 + ... + 3973945.

It is an arithmetic number, because the mean of its divisors is an integer number (23843610).

Almost surely, 2^87426559 is an apocalyptic number.

87426559 is a deficient number, since it is larger than the sum of its proper divisors (7947881).

87426559 is a wasteful number, since it uses less digits than its factorization.

87426559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947880.

The product of its digits is 604800, while the sum is 46.

The square root of 87426559 is about 9350.2170563041. The cubic root of 87426559 is about 443.8277593284.

The spelling of 87426559 in words is "eighty-seven million, four hundred twenty-six thousand, five hundred fifty-nine".