1223456654 has 16 divisors (see below), whose sum is σ = 2105157600. Its totient is φ = 522387744.

The previous prime is 1223456653. The next prime is 1223456693. The reversal of 1223456654 is 4566543221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223456653) 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 7 ways as a sum of consecutive naturals, for example, 158669 + ... + 166200.

It is an arithmetic number, because the mean of its divisors is an integer number (131572350).

Almost surely, 2^1223456654 is an apocalyptic number.

1223456654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1223456654 is a deficient number, since it is larger than the sum of its proper divisors (881700946).

1223456654 is a wasteful number, since it uses less digits than its factorization.

1223456654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325147.

The product of its digits is 172800, while the sum is 38.

The square root of 1223456654 is about 34977.9452512580. The cubic root of 1223456654 is about 1069.5379418205.

Adding to 1223456654 its reverse (4566543221), we get a palindrome (5789999875).

The spelling of 1223456654 in words is "one billion, two hundred twenty-three million, four hundred fifty-six thousand, six hundred fifty-four".