1320634675 has 12 divisors (see below), whose sum is σ = 1648436656. Its totient is φ = 1049508000.

The previous prime is 1320634669. The next prime is 1320634687. The reversal of 1320634675 is 5764360231.

It is not a de Polignac number, because 1320634675 - 2¹⁵ = 1320601907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 171144 + ... + 178693.

Almost surely, 2^1320634675 is an apocalyptic number.

1320634675 is a deficient number, since it is larger than the sum of its proper divisors (327801981).

1320634675 is a wasteful number, since it uses less digits than its factorization.

1320634675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349998 (or 349993 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 1320634675 is about 36340.5376267330. The cubic root of 1320634675 is about 1097.1370939124.

The spelling of 1320634675 in words is "one billion, three hundred twenty million, six hundred thirty-four thousand, six hundred seventy-five".