222778463 has 4 divisors (see below), whose sum is σ = 222815088. Its totient is φ = 222741840.

The previous prime is 222778459. The next prime is 222778487. The reversal of 222778463 is 364877222.

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

It is a cyclic number.

It is not a de Polignac number, because 222778463 - 2² = 222778459 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 222778463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222778403) 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, 6758 + ... + 22163.

It is an arithmetic number, because the mean of its divisors is an integer number (55703772).

Almost surely, 2^222778463 is an apocalyptic number.

222778463 is a deficient number, since it is larger than the sum of its proper divisors (36625).

222778463 is an equidigital number, since it uses as much as digits as its factorization.

222778463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36624.

The product of its digits is 225792, while the sum is 41.

The square root of 222778463 is about 14925.7650725181. The cubic root of 222778463 is about 606.2118214807.

The spelling of 222778463 in words is "two hundred twenty-two million, seven hundred seventy-eight thousand, four hundred sixty-three".