1275633 has 12 divisors (see below), whose sum is σ = 1888068. Its totient is φ = 829440.

The previous prime is 1275611. The next prime is 1275643. The reversal of 1275633 is 3365721.

It is a happy number.

1275633 is a `hidden beast` number, since 1 + 27 + 5 + 633 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36864 + 1238769 = 192^2 + 1113^2 .

It is not a de Polignac number, because 1275633 - 2⁵ = 1275601 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1275597 and 1275606.

It is not an unprimeable number, because it can be changed into a prime (1275643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1360 + ... + 2097.

It is an arithmetic number, because the mean of its divisors is an integer number (157339).

2^1275633 is an apocalyptic number.

It is an amenable number.

1275633 is a deficient number, since it is larger than the sum of its proper divisors (612435).

1275633 is a wasteful number, since it uses less digits than its factorization.

1275633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3501 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 1275633 is about 1129.4392413937. The cubic root of 1275633 is about 108.4530862469.

The spelling of 1275633 in words is "one million, two hundred seventy-five thousand, six hundred thirty-three".