870006605 has 16 divisors (see below), whose sum is σ = 1129040640. Its totient is φ = 639766848.

The previous prime is 870006589. The next prime is 870006611. The reversal of 870006605 is 506600078.

It is a cyclic number.

It is not a de Polignac number, because 870006605 - 2⁴ = 870006589 is a prime.

It is a super-2 number, since 2×870006605² = 1513822985487252050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12467 + ... + 43536.

It is an arithmetic number, because the mean of its divisors is an integer number (70565040).

Almost surely, 2^870006605 is an apocalyptic number.

It is an amenable number.

870006605 is a deficient number, since it is larger than the sum of its proper divisors (259034035).

870006605 is a wasteful number, since it uses less digits than its factorization.

870006605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56260.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 870006605 is about 29495.8743725288. The cubic root of 870006605 is about 954.6426867916.

The spelling of 870006605 in words is "eight hundred seventy million, six thousand, six hundred five".