1223022646 has 4 divisors (see below), whose sum is σ = 1834533972. Its totient is φ = 611511322.

The previous prime is 1223022643. The next prime is 1223022683. The reversal of 1223022646 is 6462203221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223022643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305755660 + ... + 305755663.

It is an arithmetic number, because the mean of its divisors is an integer number (458633493).

Almost surely, 2^1223022646 is an apocalyptic number.

1223022646 is a deficient number, since it is larger than the sum of its proper divisors (611511326).

1223022646 is an equidigital number, since it uses as much as digits as its factorization.

1223022646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611511325.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1223022646 is about 34971.7406772954. The cubic root of 1223022646 is about 1069.4114578619.

Adding to 1223022646 its reverse (6462203221), we get a palindrome (7685225867).

The spelling of 1223022646 in words is "one billion, two hundred twenty-three million, twenty-two thousand, six hundred forty-six".