806630661 has 12 divisors (see below), whose sum is σ = 1167023520. Its totient is φ = 536881320.

The previous prime is 806630641. The next prime is 806630683. The reversal of 806630661 is 166036608.

It is not a de Polignac number, because 806630661 - 2²⁷ = 672412933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806630611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66825 + ... + 77966.

It is an arithmetic number, because the mean of its divisors is an integer number (97251960).

Almost surely, 2^806630661 is an apocalyptic number.

It is an amenable number.

806630661 is a deficient number, since it is larger than the sum of its proper divisors (360392859).

806630661 is a wasteful number, since it uses less digits than its factorization.

806630661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145416 (or 145413 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 806630661 is about 28401.2440044446. The cubic root of 806630661 is about 930.8754468928.

The spelling of 806630661 in words is "eight hundred six million, six hundred thirty thousand, six hundred sixty-one".