755999 has 4 divisors (see below), whose sum is σ = 774480. Its totient is φ = 737520.

The previous prime is 755977. The next prime is 756011. The reversal of 755999 is 999557.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-755999 is a prime.

It is a Duffinian number.

755999 is a modest number, since divided by 999 gives 755 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755959) 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 3 ways as a sum of consecutive naturals, for example, 9179 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (193620).

2⁷⁵⁵⁹⁹⁹ is an apocalyptic number.

755999 is a deficient number, since it is larger than the sum of its proper divisors (18481).

755999 is a wasteful number, since it uses less digits than its factorization.

755999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18480.

The product of its digits is 127575, while the sum is 44.

The square root of 755999 is about 869.4820297165. The cubic root of 755999 is about 91.0976289897.

The spelling of 755999 in words is "seven hundred fifty-five thousand, nine hundred ninety-nine".