1197680287 has 2 divisors, whose sum is σ = 1197680288. Its totient is φ = 1197680286.

The previous prime is 1197680249. The next prime is 1197680329. The reversal of 1197680287 is 7820867911.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197680287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1197680287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197680227) 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 as a sum of consecutive naturals, namely, 598840143 + 598840144.

It is an arithmetic number, because the mean of its divisors is an integer number (598840144).

Almost surely, 2^1197680287 is an apocalyptic number.

1197680287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197680287 is an equidigital number, since it uses as much as digits as its factorization.

1197680287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 1197680287 is about 34607.5177815457. The cubic root of 1197680287 is about 1061.9733877923.

The spelling of 1197680287 in words is "one billion, one hundred ninety-seven million, six hundred eighty thousand, two hundred eighty-seven".