1276513 has 12 divisors (see below), whose sum is σ = 1552192. Its totient is φ = 1028160.

The previous prime is 1276511. The next prime is 1276529. The reversal of 1276513 is 3156721.

It is not a de Polignac number, because 1276513 - 2¹ = 1276511 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1276511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708 + ... + 2338.

2^1276513 is an apocalyptic number.

It is an amenable number.

1276513 is a deficient number, since it is larger than the sum of its proper divisors (275679).

1276513 is an equidigital number, since it uses as much as digits as its factorization.

1276513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 655 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1276513 is about 1129.8287480853. The cubic root of 1276513 is about 108.4780194312.

The spelling of 1276513 in words is "one million, two hundred seventy-six thousand, five hundred thirteen".