87258661 has 12 divisors (see below), whose sum is σ = 101943360. Its totient is φ = 74470200.

The previous prime is 87258641. The next prime is 87258673. The reversal of 87258661 is 16685278.

It is not a de Polignac number, because 87258661 - 2¹¹ = 87256613 is a prime.

It is a super-2 number, since 2×87258661² = 15228147839025842, 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 (87258641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7986 + ... + 15436.

It is an arithmetic number, because the mean of its divisors is an integer number (8495280).

Almost surely, 2^87258661 is an apocalyptic number.

It is an amenable number.

87258661 is a deficient number, since it is larger than the sum of its proper divisors (14684699).

87258661 is a wasteful number, since it uses less digits than its factorization.

87258661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704 (or 7697 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 87258661 is about 9341.2344473308. The cubic root of 87258661 is about 443.5434614849.

The spelling of 87258661 in words is "eighty-seven million, two hundred fifty-eight thousand, six hundred sixty-one".