1359998687 has 4 divisors (see below), whose sum is σ = 1378628880. Its totient is φ = 1341368496.

The previous prime is 1359998683. The next prime is 1359998699. The reversal of 1359998687 is 7868999531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1359998687 - 2² = 1359998683 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 (1359998683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9314987 + ... + 9315132.

It is an arithmetic number, because the mean of its divisors is an integer number (344657220).

Almost surely, 2^1359998687 is an apocalyptic number.

1359998687 is a deficient number, since it is larger than the sum of its proper divisors (18630193).

1359998687 is an equidigital number, since it uses as much as digits as its factorization.

1359998687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18630192.

The product of its digits is 29393280, while the sum is 65.

The square root of 1359998687 is about 36878.1600273116. The cubic root of 1359998687 is about 1107.9312948032.

The spelling of 1359998687 in words is "one billion, three hundred fifty-nine million, nine hundred ninety-eight thousand, six hundred eighty-seven".