868666658 has 8 divisors (see below), whose sum is σ = 1322447952. Its totient is φ = 427850676.

The previous prime is 868666627. The next prime is 868666703. The reversal of 868666658 is 856666868.

It is a happy number.

868666658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 868666597 and 868666606.

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, 3241160 + ... + 3241427.

It is an arithmetic number, because the mean of its divisors is an integer number (165305994).

Almost surely, 2^868666658 is an apocalyptic number.

868666658 is a deficient number, since it is larger than the sum of its proper divisors (453781294).

868666658 is a wasteful number, since it uses less digits than its factorization.

868666658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482656.

The product of its digits is 19906560, while the sum is 59.

The square root of 868666658 is about 29473.1514772343. The cubic root of 868666658 is about 954.1523350068.

The spelling of 868666658 in words is "eight hundred sixty-eight million, six hundred sixty-six thousand, six hundred fifty-eight".