800666061 has 24 divisors (see below), whose sum is σ = 1216847520. Its totient is φ = 466779456.

The previous prime is 800666059. The next prime is 800666089. The reversal of 800666061 is 160666008.

It is not a de Polignac number, because 800666061 - 2¹ = 800666059 is a prime.

It is a super-2 number, since 2×800666061² = 1282132282474511442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800666011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31926 + ... + 51191.

It is an arithmetic number, because the mean of its divisors is an integer number (50701980).

Almost surely, 2^800666061 is an apocalyptic number.

It is an amenable number.

800666061 is a deficient number, since it is larger than the sum of its proper divisors (416181459).

800666061 is a wasteful number, since it uses less digits than its factorization.

800666061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83165 (or 83152 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 800666061 is about 28296.0432039534. The cubic root of 800666061 is about 928.5753270313.

The spelling of 800666061 in words is "eight hundred million, six hundred sixty-six thousand, sixty-one".