1359998685 has 24 divisors (see below), whose sum is σ = 2381641080. Its totient is φ = 717852672.

The previous prime is 1359998683. The next prime is 1359998699. The reversal of 1359998685 is 5868999531.

It can be written as a sum of positive squares in 4 ways, for example, as 106626276 + 1253372409 = 10326^2 + 35403^2 .

It is not a de Polignac number, because 1359998685 - 2¹ = 1359998683 is a prime.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151420 + ... + 160149.

It is an arithmetic number, because the mean of its divisors is an integer number (99235045).

Almost surely, 2^1359998685 is an apocalyptic number.

1359998685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1359998685 is a deficient number, since it is larger than the sum of its proper divisors (1021642395).

1359998685 is a wasteful number, since it uses less digits than its factorization.

1359998685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311677 (or 311674 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 63.

The square root of 1359998685 is about 36878.1600001952. The cubic root of 1359998685 is about 1107.9312942601.

The spelling of 1359998685 in words is "one billion, three hundred fifty-nine million, nine hundred ninety-eight thousand, six hundred eighty-five".