87707285 has 4 divisors (see below), whose sum is σ = 105248748. Its totient is φ = 70165824.

The previous prime is 87707273. The next prime is 87707297. The reversal of 87707285 is 58270778.

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 (87707273) and next prime (87707297).

It can be written as a sum of positive squares in 2 ways, for example, as 48344209 + 39363076 = 6953^2 + 6274^2 .

It is a cyclic number.

It is not a de Polignac number, because 87707285 - 2²⁶ = 20598421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8770724 + ... + 8770733.

It is an arithmetic number, because the mean of its divisors is an integer number (26312187).

Almost surely, 2^87707285 is an apocalyptic number.

It is an amenable number.

87707285 is a deficient number, since it is larger than the sum of its proper divisors (17541463).

87707285 is a wasteful number, since it uses less digits than its factorization.

87707285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17541462.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 87707285 is about 9365.2167620403. The cubic root of 87707285 is about 444.3022942736.

The spelling of 87707285 in words is "eighty-seven million, seven hundred seven thousand, two hundred eighty-five".