5999649 has 16 divisors (see below), whose sum is σ = 8551680. Its totient is φ = 3730320.

The previous prime is 5999639. The next prime is 5999663. The reversal of 5999649 is 9469995.

It is not a de Polignac number, because 5999649 - 2⁴ = 5999633 is a prime.

5999649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5999629) 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, 3034 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (534480).

Almost surely, 2^5999649 is an apocalyptic number.

It is an amenable number.

5999649 is a deficient number, since it is larger than the sum of its proper divisors (2552031).

5999649 is a wasteful number, since it uses less digits than its factorization.

5999649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its digits is 787320, while the sum is 51.

The square root of 5999649 is about 2449.4180941603. The cubic root of 5999649 is about 181.7085158290.

The spelling of 5999649 in words is "five million, nine hundred ninety-nine thousand, six hundred forty-nine".