222613906 has 8 divisors (see below), whose sum is σ = 335392560. Its totient is φ = 110816388.

The previous prime is 222613901. The next prime is 222613927. The reversal of 222613906 is 609316222.

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

It is a super-2 number, since 2×222613906² = 99113902289153672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222613901) 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, 244716 + ... + 245623.

It is an arithmetic number, because the mean of its divisors is an integer number (41924070).

Almost surely, 2^222613906 is an apocalyptic number.

222613906 is a deficient number, since it is larger than the sum of its proper divisors (112778654).

222613906 is a wasteful number, since it uses less digits than its factorization.

222613906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490568.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 222613906 is about 14920.2515394346. The cubic root of 222613906 is about 606.0625237293.

The spelling of 222613906 in words is "two hundred twenty-two million, six hundred thirteen thousand, nine hundred six".