801556966 has 16 divisors (see below), whose sum is σ = 1375354656. Its totient is φ = 343210176.

The previous prime is 801556963. The next prime is 801556967. The reversal of 801556966 is 669655108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801556963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9991 + ... + 41266.

It is an arithmetic number, because the mean of its divisors is an integer number (85959666).

Almost surely, 2^801556966 is an apocalyptic number.

801556966 is a deficient number, since it is larger than the sum of its proper divisors (573797690).

801556966 is a wasteful number, since it uses less digits than its factorization.

801556966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52383.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 801556966 is about 28311.7813992691. The cubic root of 801556966 is about 928.9196094543.

The spelling of 801556966 in words is "eight hundred one million, five hundred fifty-six thousand, nine hundred sixty-six".