660222243 has 6 divisors (see below), whose sum is σ = 953654364. Its totient is φ = 440148156.

The previous prime is 660222239. The next prime is 660222257. The reversal of 660222243 is 342222066.

It is not a de Polignac number, because 660222243 - 2² = 660222239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660226243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36679005 + ... + 36679022.

It is an arithmetic number, because the mean of its divisors is an integer number (158942394).

Almost surely, 2^660222243 is an apocalyptic number.

660222243 is a deficient number, since it is larger than the sum of its proper divisors (293432121).

660222243 is a wasteful number, since it uses less digits than its factorization.

660222243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73358033 (or 73358030 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 660222243 is about 25694.7901917879. The cubic root of 660222243 is about 870.7564843204.

It can be divided in two parts, 66022 and 2243, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 660222243 in words is "six hundred sixty million, two hundred twenty-two thousand, two hundred forty-three".