1276764 has 12 divisors (see below), whose sum is σ = 2979144. Its totient is φ = 425584.

The previous prime is 1276763. The next prime is 1276771. The reversal of 1276764 is 4676721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276763) 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 3 ways as a sum of consecutive naturals, for example, 53187 + ... + 53210.

It is an arithmetic number, because the mean of its divisors is an integer number (248262).

2^1276764 is an apocalyptic number.

It is an amenable number.

1276764 is an abundant number, since it is smaller than the sum of its proper divisors (1702380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1276764 is a wasteful number, since it uses less digits than its factorization.

1276764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106404 (or 106402 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 1276764 is about 1129.9398214064. The cubic root of 1276764 is about 108.4851289549.

The spelling of 1276764 in words is "one million, two hundred seventy-six thousand, seven hundred sixty-four".