1224705 has 8 divisors (see below), whose sum is σ = 1959552. Its totient is φ = 653168.

The previous prime is 1224703. The next prime is 1224709. The reversal of 1224705 is 5074221.

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 1224705 - 2¹ = 1224703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1224701) 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, 40809 + ... + 40838.

It is an arithmetic number, because the mean of its divisors is an integer number (244944).

It is a Proth number, since it is equal to 299 ⋅ 2¹² + 1 and 299 < 2¹².

2^1224705 is an apocalyptic number.

1224705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224705 is a deficient number, since it is larger than the sum of its proper divisors (734847).

1224705 is an equidigital number, since it uses as much as digits as its factorization.

1224705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81655.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1224705 is about 1106.6639056190. The cubic root of 1224705 is about 106.9901583518.

Adding to 1224705 its reverse (5074221), we get a palindrome (6298926).

The spelling of 1224705 in words is "one million, two hundred twenty-four thousand, seven hundred five".