87042677 has 4 divisors (see below), whose sum is σ = 87484716. Its totient is φ = 86600640.

The previous prime is 87042661. The next prime is 87042689. The reversal of 87042677 is 77624078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83923921 + 3118756 = 9161^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 87042677 - 2⁴ = 87042661 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 (87042617) 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, 220724 + ... + 221117.

It is an arithmetic number, because the mean of its divisors is an integer number (21871179).

Almost surely, 2^87042677 is an apocalyptic number.

It is an amenable number.

87042677 is a deficient number, since it is larger than the sum of its proper divisors (442039).

87042677 is a wasteful number, since it uses less digits than its factorization.

87042677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442038.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 87042677 is about 9329.6664999345. Note that the first 3 decimals coincide. The cubic root of 87042677 is about 443.1772038961.

The spelling of 87042677 in words is "eighty-seven million, forty-two thousand, six hundred seventy-seven".