1224663745 has 8 divisors (see below), whose sum is σ = 1469846016. Its totient is φ = 979564656.

The previous prime is 1224663743. The next prime is 1224663749. The reversal of 1224663745 is 5473664221.

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

It is a cyclic number.

It is not a de Polignac number, because 1224663745 - 2¹ = 1224663743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224663698 and 1224663707.

It is not an unprimeable number, because it can be changed into a prime (1224663743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18274 + ... + 52756.

It is an arithmetic number, because the mean of its divisors is an integer number (183730752).

Almost surely, 2^1224663745 is an apocalyptic number.

It is an amenable number.

1224663745 is a deficient number, since it is larger than the sum of its proper divisors (245182271).

1224663745 is an equidigital number, since it uses as much as digits as its factorization.

1224663745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41591.

The product of its digits is 241920, while the sum is 40.

The square root of 1224663745 is about 34995.1960274550. The cubic root of 1224663745 is about 1069.8895699351.

The spelling of 1224663745 in words is "one billion, two hundred twenty-four million, six hundred sixty-three thousand, seven hundred forty-five".