222687361 has 4 divisors (see below), whose sum is σ = 239817172. Its totient is φ = 205557552.

The previous prime is 222687337. The next prime is 222687373. The reversal of 222687361 is 163786222.

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 51208336 + 171479025 = 7156^2 + 13095^2 .

It is a cyclic number.

It is not a de Polignac number, because 222687361 - 2¹¹ = 222685313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222687361.

It is not an unprimeable number, because it can be changed into a prime (222687461) 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, 8564886 + ... + 8564911.

It is an arithmetic number, because the mean of its divisors is an integer number (59954293).

Almost surely, 2^222687361 is an apocalyptic number.

It is an amenable number.

222687361 is a deficient number, since it is larger than the sum of its proper divisors (17129811).

222687361 is a wasteful number, since it uses less digits than its factorization.

222687361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17129810.

The product of its digits is 48384, while the sum is 37.

The square root of 222687361 is about 14922.7129235940. The cubic root of 222687361 is about 606.1291763895.

The spelling of 222687361 in words is "two hundred twenty-two million, six hundred eighty-seven thousand, three hundred sixty-one".