868001656 has 8 divisors (see below), whose sum is σ = 1627503120. Its totient is φ = 434000824.

The previous prime is 868001647. The next prime is 868001671. The reversal of 868001656 is 656100868.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54250096 + ... + 54250111.

It is an arithmetic number, because the mean of its divisors is an integer number (203437890).

Almost surely, 2^868001656 is an apocalyptic number.

It is an amenable number.

868001656 is a deficient number, since it is larger than the sum of its proper divisors (759501464).

868001656 is a wasteful number, since it uses less digits than its factorization.

868001656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108500213 (or 108500209 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 868001656 is about 29461.8678294503. The cubic root of 868001656 is about 953.9087911840.

The spelling of 868001656 in words is "eight hundred sixty-eight million, one thousand, six hundred fifty-six".