1276704005 has 8 divisors (see below), whose sum is σ = 1564641792. Its totient is φ = 999631888.

The previous prime is 1276704001. The next prime is 1276704049. The reversal of 1276704005 is 5004076721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1276704005 - 2² = 1276704001 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 (1276704001) 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 7 ways as a sum of consecutive naturals, for example, 2716157 + ... + 2716626.

It is an arithmetic number, because the mean of its divisors is an integer number (195580224).

Almost surely, 2^1276704005 is an apocalyptic number.

It is an amenable number.

1276704005 is a deficient number, since it is larger than the sum of its proper divisors (287937787).

1276704005 is an equidigital number, since it uses as much as digits as its factorization.

1276704005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432835.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1276704005 is about 35730.9950183311. The cubic root of 1276704005 is about 1084.8342969357.

The spelling of 1276704005 in words is "one billion, two hundred seventy-six million, seven hundred four thousand, five".