866099122 has 16 divisors (see below), whose sum is σ = 1497883392. Its totient is φ = 367899840.

The previous prime is 866099089. The next prime is 866099137. The reversal of 866099122 is 221990668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272154 + ... + 275317.

It is an arithmetic number, because the mean of its divisors is an integer number (93617712).

Almost surely, 2^866099122 is an apocalyptic number.

866099122 is a deficient number, since it is larger than the sum of its proper divisors (631784270).

866099122 is a wasteful number, since it uses less digits than its factorization.

866099122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547593.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 866099122 is about 29429.5620422731. The cubic root of 866099122 is about 953.2113380279.

The spelling of 866099122 in words is "eight hundred sixty-six million, ninety-nine thousand, one hundred twenty-two".