2006864656 has 40 divisors (see below), whose sum is σ = 3983316480. Its totient is φ = 979044864.

The previous prime is 2006864633. The next prime is 2006864687. The reversal of 2006864656 is 6564686002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249465 + ... + 257383.

It is an arithmetic number, because the mean of its divisors is an integer number (99582912).

Almost surely, 2^2006864656 is an apocalyptic number.

It is an amenable number.

2006864656 is a deficient number, since it is larger than the sum of its proper divisors (1976451824).

2006864656 is a wasteful number, since it uses less digits than its factorization.

2006864656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311 (or 8305 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 2006864656 is about 44798.0429929701. The cubic root of 2006864656 is about 1261.3608912457.

The spelling of 2006864656 in words is "two billion, six million, eight hundred sixty-four thousand, six hundred fifty-six".