222499966 has 8 divisors (see below), whose sum is σ = 359423064. Its totient is φ = 102692280.

The previous prime is 222499913. The next prime is 222499967. The reversal of 222499966 is 669994222.

222499966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222499967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4278820 + ... + 4278871.

It is an arithmetic number, because the mean of its divisors is an integer number (44927883).

Almost surely, 2^222499966 is an apocalyptic number.

222499966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

222499966 is a deficient number, since it is larger than the sum of its proper divisors (136923098).

222499966 is a wasteful number, since it uses less digits than its factorization.

222499966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557706.

The product of its digits is 839808, while the sum is 49.

The square root of 222499966 is about 14916.4327504937. The cubic root of 222499966 is about 605.9591061877.

The spelling of 222499966 in words is "two hundred twenty-two million, four hundred ninety-nine thousand, nine hundred sixty-six".