222645747 has 8 divisors (see below), whose sum is σ = 298501840. Its totient is φ = 147610080.

The previous prime is 222645737. The next prime is 222645803. The reversal of 222645747 is 747546222.

It is a happy number.

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

It is not a de Polignac number, because 222645747 - 2²³ = 214257139 is a prime.

It is a super-2 number, since 2×222645747² = 99142257314376018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222645737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204472 + ... + 205557.

It is an arithmetic number, because the mean of its divisors is an integer number (37312730).

Almost surely, 2^222645747 is an apocalyptic number.

222645747 is a deficient number, since it is larger than the sum of its proper divisors (75856093).

222645747 is a wasteful number, since it uses less digits than its factorization.

222645747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410213.

The product of its digits is 188160, while the sum is 39.

The square root of 222645747 is about 14921.3185409333. The cubic root of 222645747 is about 606.0914178764.

The spelling of 222645747 in words is "two hundred twenty-two million, six hundred forty-five thousand, seven hundred forty-seven".