855663122 has 4 divisors (see below), whose sum is σ = 1283494686. Its totient is φ = 427831560.

The previous prime is 855663079. The next prime is 855663131. The reversal of 855663122 is 221366558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 659411041 + 196252081 = 25679^2 + 14009^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213915779 + ... + 213915782.

Almost surely, 2^855663122 is an apocalyptic number.

855663122 is a deficient number, since it is larger than the sum of its proper divisors (427831564).

855663122 is a wasteful number, since it uses less digits than its factorization.

855663122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427831563.

The product of its digits is 86400, while the sum is 38.

The square root of 855663122 is about 29251.7199836181. The cubic root of 855663122 is about 949.3673061474.

It can be divided in two parts, 85566 and 3122, that added together give a palindrome (88688).

The spelling of 855663122 in words is "eight hundred fifty-five million, six hundred sixty-three thousand, one hundred twenty-two".