1244643 has 8 divisors (see below), whose sum is σ = 1704528. Its totient is φ = 807264.

The previous prime is 1244629. The next prime is 1244647. The reversal of 1244643 is 3464421.

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

It is not a de Polignac number, because 1244643 - 2⁴ = 1244627 is a prime.

1244643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1244647) 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, 5496 + ... + 5717.

It is an arithmetic number, because the mean of its divisors is an integer number (213066).

2^1244643 is an apocalyptic number.

1244643 is a deficient number, since it is larger than the sum of its proper divisors (459885).

1244643 is a wasteful number, since it uses less digits than its factorization.

1244643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253.

The product of its digits is 2304, while the sum is 24.

The square root of 1244643 is about 1115.6356932261. The cubic root of 1244643 is about 107.5676300597.

The spelling of 1244643 in words is "one million, two hundred forty-four thousand, six hundred forty-three".