1226997 has 6 divisors (see below), whose sum is σ = 1772342. Its totient is φ = 817992.

The previous prime is 1226993. The next prime is 1227047. The reversal of 1226997 is 7996221.

It can be written as a sum of positive squares in only one way, i.e., 695556 + 531441 = 834^2 + 729^2 .

It is not a de Polignac number, because 1226997 - 2² = 1226993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68158 + ... + 68175.

2^1226997 is an apocalyptic number.

It is an amenable number.

1226997 is a deficient number, since it is larger than the sum of its proper divisors (545345).

1226997 is a wasteful number, since it uses less digits than its factorization.

1226997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136339 (or 136336 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 1226997 is about 1107.6989663261. The cubic root of 1226997 is about 107.0568597552.

Subtracting from 1226997 its sum of digits (36), we obtain a triangular number (1226961 = T₁₅₆₆).

The spelling of 1226997 in words is "one million, two hundred twenty-six thousand, nine hundred ninety-seven".