5999778 has 32 divisors (see below), whose sum is σ = 13446720. Its totient is φ = 1982880.

The previous prime is 5999767. The next prime is 5999779. The reversal of 5999778 is 8779995.

5999778 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5999779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6993 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (420210).

Almost surely, 2^5999778 is an apocalyptic number.

5999778 is an abundant number, since it is smaller than the sum of its proper divisors (7446942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5999778 is a wasteful number, since it uses less digits than its factorization.

5999778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 953 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The square root of 5999778 is about 2449.4444268038. Note that the first 4 decimals coincide. The cubic root of 5999778 is about 181.7098181402.

The spelling of 5999778 in words is "five million, nine hundred ninety-nine thousand, seven hundred seventy-eight".