663261222 has 32 divisors (see below), whose sum is σ = 1512598752. Its totient is φ = 192075264.

The previous prime is 663261211. The next prime is 663261259. The reversal of 663261222 is 222162366.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 663261222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248773 + ... + 251424.

It is an arithmetic number, because the mean of its divisors is an integer number (47268711).

Almost surely, 2^663261222 is an apocalyptic number.

663261222 is an abundant number, since it is smaller than the sum of its proper divisors (849337530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663261222 is a wasteful number, since it uses less digits than its factorization.

663261222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500232.

The product of its digits is 10368, while the sum is 30.

The square root of 663261222 is about 25753.8583905402. The cubic root of 663261222 is about 872.0904598171.

The spelling of 663261222 in words is "six hundred sixty-three million, two hundred sixty-one thousand, two hundred twenty-two".