1320727087 has 16 divisors (see below), whose sum is σ = 1362396672. Its totient is φ = 1279792800.

The previous prime is 1320727081. The next prime is 1320727123. The reversal of 1320727087 is 7807270231.

It is a cyclic number.

It is not a de Polignac number, because 1320727087 - 2¹⁹ = 1320202799 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 (1320727081) 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 15 ways as a sum of consecutive naturals, for example, 1816318 + ... + 1817044.

It is an arithmetic number, because the mean of its divisors is an integer number (85149792).

Almost surely, 2^1320727087 is an apocalyptic number.

1320727087 is a deficient number, since it is larger than the sum of its proper divisors (41669585).

1320727087 is a wasteful number, since it uses less digits than its factorization.

1320727087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 1320727087 is about 36341.8090771497. The cubic root of 1320727087 is about 1097.1626842012.

The spelling of 1320727087 in words is "one billion, three hundred twenty million, seven hundred twenty-seven thousand, eighty-seven".