861022966 has 8 divisors (see below), whose sum is σ = 1293692400. Its totient is φ = 429792168.

The previous prime is 861022961. The next prime is 861022997. The reversal of 861022966 is 669220168.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861022961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358161 + ... + 360556.

It is an arithmetic number, because the mean of its divisors is an integer number (161711550).

Almost surely, 2^861022966 is an apocalyptic number.

861022966 is a deficient number, since it is larger than the sum of its proper divisors (432669434).

861022966 is a wasteful number, since it uses less digits than its factorization.

861022966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719318.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 861022966 is about 29343.1928392259. The cubic root of 861022966 is about 951.3454494541.

The spelling of 861022966 in words is "eight hundred sixty-one million, twenty-two thousand, nine hundred sixty-six".