222661641 has 8 divisors (see below), whose sum is σ = 299509920. Its totient is φ = 147127232.

The previous prime is 222661633. The next prime is 222661661. The reversal of 222661641 is 146166222.

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

It is a cyclic number.

It is not a de Polignac number, because 222661641 - 2³ = 222661633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222661599 and 222661608.

It is not an unprimeable number, because it can be changed into a prime (222661661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328071 + ... + 328748.

It is an arithmetic number, because the mean of its divisors is an integer number (37438740).

Almost surely, 2^222661641 is an apocalyptic number.

It is an amenable number.

222661641 is a deficient number, since it is larger than the sum of its proper divisors (76848279).

222661641 is a wasteful number, since it uses less digits than its factorization.

222661641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656935.

The product of its digits is 6912, while the sum is 30.

The square root of 222661641 is about 14921.8511251118. The cubic root of 222661641 is about 606.1058398718.

The spelling of 222661641 in words is "two hundred twenty-two million, six hundred sixty-one thousand, six hundred forty-one".