222457645 has 16 divisors (see below), whose sum is σ = 272793600. Its totient is φ = 174109824.

The previous prime is 222457639. The next prime is 222457661. The reversal of 222457645 is 546754222.

It is a cyclic number.

It is not a de Polignac number, because 222457645 - 2⁹ = 222457133 is a prime.

It is a super-3 number, since 3×222457645³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43956 + ... + 48754.

It is an arithmetic number, because the mean of its divisors is an integer number (17049600).

Almost surely, 2^222457645 is an apocalyptic number.

It is an amenable number.

222457645 is a deficient number, since it is larger than the sum of its proper divisors (50335955).

222457645 is a wasteful number, since it uses less digits than its factorization.

222457645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004.

The product of its digits is 134400, while the sum is 37.

The square root of 222457645 is about 14915.0140797788. The cubic root of 222457645 is about 605.9206845767.

It can be divided in two parts, 22245 and 7645, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 222457645 in words is "two hundred twenty-two million, four hundred fifty-seven thousand, six hundred forty-five".