755989 has 4 divisors (see below), whose sum is σ = 814156. Its totient is φ = 697824.

The previous prime is 755977. The next prime is 756011. The reversal of 755989 is 989557.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33489 + 722500 = 183^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 755989 - 2⁷ = 755861 is a prime.

It is a Duffinian number.

755989 is a lucky number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29064 + ... + 29089.

It is an arithmetic number, because the mean of its divisors is an integer number (203539).

2⁷⁵⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

755989 is a deficient number, since it is larger than the sum of its proper divisors (58167).

755989 is a wasteful number, since it uses less digits than its factorization.

755989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58166.

The product of its digits is 113400, while the sum is 43.

The square root of 755989 is about 869.4762791474. The cubic root of 755989 is about 91.0972273224.

The spelling of 755989 in words is "seven hundred fifty-five thousand, nine hundred eighty-nine".