1222678 has 8 divisors (see below), whose sum is σ = 1841472. Its totient is φ = 608856.

The previous prime is 1222667. The next prime is 1222679. The reversal of 1222678 is 8762221.

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

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222679) 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, 550 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (230184).

2^1222678 is an apocalyptic number.

1222678 is a deficient number, since it is larger than the sum of its proper divisors (618794).

1222678 is a wasteful number, since it uses less digits than its factorization.

1222678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486.

The product of its digits is 2688, while the sum is 28.

The square root of 1222678 is about 1105.7477108274. The cubic root of 1222678 is about 106.9310995561.

Adding to 1222678 its reverse (8762221), we get a palindrome (9984899).

The spelling of 1222678 in words is "one million, two hundred twenty-two thousand, six hundred seventy-eight".