1296476665 has 8 divisors (see below), whose sum is σ = 1697205888. Its totient is φ = 942892080.

The previous prime is 1296476603. The next prime is 1296476669. The reversal of 1296476665 is 5666746921.

It is a happy number.

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

It is not a de Polignac number, because 1296476665 - 2⁷ = 1296476537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296476669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11786097 + ... + 11786206.

It is an arithmetic number, because the mean of its divisors is an integer number (212150736).

Almost surely, 2^1296476665 is an apocalyptic number.

It is an amenable number.

1296476665 is a deficient number, since it is larger than the sum of its proper divisors (400729223).

1296476665 is a wasteful number, since it uses less digits than its factorization.

1296476665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23572319.

The product of its digits is 3265920, while the sum is 52.

The square root of 1296476665 is about 36006.6197385981. The cubic root of 1296476665 is about 1090.4060056405.

The spelling of 1296476665 in words is "one billion, two hundred ninety-six million, four hundred seventy-six thousand, six hundred sixty-five".