87258679 has 4 divisors (see below), whose sum is σ = 87305400. Its totient is φ = 87211960.

The previous prime is 87258673. The next prime is 87258749. The reversal of 87258679 is 97685278.

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 87258679 - 2⁹ = 87258167 is a prime.

It is a super-2 number, since 2×87258679² = 15228154121650082, 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 (87258673) 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, 20437 + ... + 24334.

It is an arithmetic number, because the mean of its divisors is an integer number (21826350).

Almost surely, 2^87258679 is an apocalyptic number.

87258679 is a deficient number, since it is larger than the sum of its proper divisors (46721).

87258679 is a wasteful number, since it uses less digits than its factorization.

87258679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46720.

The product of its digits is 1693440, while the sum is 52.

The square root of 87258679 is about 9341.2354108009. The cubic root of 87258679 is about 443.5434919834.

The spelling of 87258679 in words is "eighty-seven million, two hundred fifty-eight thousand, six hundred seventy-nine".