222677661 has 4 divisors (see below), whose sum is σ = 296903552. Its totient is φ = 148451772.

The previous prime is 222677659. The next prime is 222677671. The reversal of 222677661 is 166776222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222677661 - 2¹ = 222677659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222677621) 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, 37112941 + ... + 37112946.

It is an arithmetic number, because the mean of its divisors is an integer number (74225888).

Almost surely, 2^222677661 is an apocalyptic number.

It is an amenable number.

222677661 is a deficient number, since it is larger than the sum of its proper divisors (74225891).

222677661 is an equidigital number, since it uses as much as digits as its factorization.

222677661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74225890.

The product of its digits is 84672, while the sum is 39.

The square root of 222677661 is about 14922.3879121272. The cubic root of 222677661 is about 606.1203755033.

The spelling of 222677661 in words is "two hundred twenty-two million, six hundred seventy-seven thousand, six hundred sixty-one".