6159985 has 16 divisors (see below), whose sum is σ = 8050896. Its totient is φ = 4497408.

The previous prime is 6159983. The next prime is 6159991. The reversal of 6159985 is 5899516.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4624 + 6155361 = 68^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 6159985 - 2¹ = 6159983 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 (6159983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5817 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (503181).

Almost surely, 2^6159985 is an apocalyptic number.

6159985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6159985 is a deficient number, since it is larger than the sum of its proper divisors (1890911).

6159985 is a wasteful number, since it uses less digits than its factorization.

6159985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its digits is 97200, while the sum is 43.

The square root of 6159985 is about 2481.9317073602. The cubic root of 6159985 is about 183.3129802934.

The spelling of 6159985 in words is "six million, one hundred fifty-nine thousand, nine hundred eighty-five".