222689077 has 4 divisors (see below), whose sum is σ = 239819020. Its totient is φ = 205559136.

The previous prime is 222689053. The next prime is 222689107. The reversal of 222689077 is 770986222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49477156 + 173211921 = 7034^2 + 13161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222689077 is a prime.

It is a super-2 number, since 2×222689077² = 99180850030223858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222689377) 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 in 3 ways as a sum of consecutive naturals, for example, 8564952 + ... + 8564977.

It is an arithmetic number, because the mean of its divisors is an integer number (59954755).

Almost surely, 2^222689077 is an apocalyptic number.

It is an amenable number.

222689077 is a deficient number, since it is larger than the sum of its proper divisors (17129943).

222689077 is a wasteful number, since it uses less digits than its factorization.

222689077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17129942.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 222689077 is about 14922.7704197310. The cubic root of 222689077 is about 606.1307333032.

The spelling of 222689077 in words is "two hundred twenty-two million, six hundred eighty-nine thousand, seventy-seven".