859666652 has 12 divisors (see below), whose sum is σ = 1620141096. Its totient is φ = 396769200.

The previous prime is 859666649. The next prime is 859666739. The reversal of 859666652 is 256666958.

It is a junction number, because it is equal to n+sod(n) for n = 859666594 and 859666603.

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, 8265974 + ... + 8266077.

It is an arithmetic number, because the mean of its divisors is an integer number (135011758).

Almost surely, 2^859666652 is an apocalyptic number.

It is an amenable number.

859666652 is a deficient number, since it is larger than the sum of its proper divisors (760474444).

859666652 is a wasteful number, since it uses less digits than its factorization.

859666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16532068 (or 16532066 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 53.

The square root of 859666652 is about 29320.0725101423. The cubic root of 859666652 is about 950.8456558684.

The spelling of 859666652 in words is "eight hundred fifty-nine million, six hundred sixty-six thousand, six hundred fifty-two".