660251222 has 16 divisors (see below), whose sum is σ = 1003871232. Its totient is φ = 325640040.

The previous prime is 660251209. The next prime is 660251227. The reversal of 660251222 is 222152066.

660251222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 660251191 and 660251200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660251227) 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, 117947 + ... + 123417.

It is an arithmetic number, because the mean of its divisors is an integer number (62741952).

Almost surely, 2^660251222 is an apocalyptic number.

660251222 is a deficient number, since it is larger than the sum of its proper divisors (343620010).

660251222 is a wasteful number, since it uses less digits than its factorization.

660251222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 660251222 is about 25695.3540936878. The cubic root of 660251222 is about 870.7692241128.

The spelling of 660251222 in words is "six hundred sixty million, two hundred fifty-one thousand, two hundred twenty-two".