222639607 has 2 divisors, whose sum is σ = 222639608. Its totient is φ = 222639606.

The previous prime is 222639533. The next prime is 222639623. The reversal of 222639607 is 706936222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222639607 is a prime.

It is a super-2 number, since 2×222639607² = 99136789210228898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222639407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111319803 + 111319804.

It is an arithmetic number, because the mean of its divisors is an integer number (111319804).

Almost surely, 2^222639607 is an apocalyptic number.

222639607 is a deficient number, since it is larger than the sum of its proper divisors (1).

222639607 is an equidigital number, since it uses as much as digits as its factorization.

222639607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 222639607 is about 14921.1127936223. The cubic root of 222639607 is about 606.0858463417.

The spelling of 222639607 in words is "two hundred twenty-two million, six hundred thirty-nine thousand, six hundred seven".