1226745 has 40 divisors (see below), whose sum is σ = 2378376. Its totient is φ = 601344.

The previous prime is 1226741. The next prime is 1226767. The reversal of 1226745 is 5476221.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 1225449 = 36^2 + 1107^2 .

It is not a de Polignac number, because 1226745 - 2² = 1226741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

1226745 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1226741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5149 + ... + 5381.

2^1226745 is an apocalyptic number.

1226745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1226745 is a deficient number, since it is larger than the sum of its proper divisors (1151631).

1226745 is a wasteful number, since it uses less digits than its factorization.

1226745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 1226745 is about 1107.5852111689. The cubic root of 1226745 is about 107.0495301595.

The spelling of 1226745 in words is "one million, two hundred twenty-six thousand, seven hundred forty-five".