1276220684 has 6 divisors (see below), whose sum is σ = 2233386204. Its totient is φ = 638110340.

The previous prime is 1276220677. The next prime is 1276220713. The reversal of 1276220684 is 4860226721.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 159527582 + ... + 159527589.

It is an arithmetic number, because the mean of its divisors is an integer number (372231034).

Almost surely, 2^1276220684 is an apocalyptic number.

It is an amenable number.

1276220684 is a deficient number, since it is larger than the sum of its proper divisors (957165520).

1276220684 is a wasteful number, since it uses less digits than its factorization.

1276220684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319055175 (or 319055173 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1276220684 is about 35724.2310484075. The cubic root of 1276220684 is about 1084.6973846539.

The spelling of 1276220684 in words is "one billion, two hundred seventy-six million, two hundred twenty thousand, six hundred eighty-four".