800570661 has 16 divisors (see below), whose sum is σ = 1169607168. Its totient is φ = 483052400.

The previous prime is 800570657. The next prime is 800570663. The reversal of 800570661 is 166075008.

It is a cyclic number.

It is not a de Polignac number, because 800570661 - 2² = 800570657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800570663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45945 + ... + 60926.

It is an arithmetic number, because the mean of its divisors is an integer number (73100448).

Almost surely, 2^800570661 is an apocalyptic number.

It is an amenable number.

800570661 is a deficient number, since it is larger than the sum of its proper divisors (369036507).

800570661 is a wasteful number, since it uses less digits than its factorization.

800570661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107112.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 800570661 is about 28294.3574056737. The cubic root of 800570661 is about 928.5384454027.

The spelling of 800570661 in words is "eight hundred million, five hundred seventy thousand, six hundred sixty-one".