755665 has 8 divisors (see below), whose sum is σ = 946368. Its totient is φ = 578160.

The previous prime is 755663. The next prime is 755681. The reversal of 755665 is 566557.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 755665 - 2¹ = 755663 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 755665.

It is not an unprimeable number, because it can be changed into a prime (755663) 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 7 ways as a sum of consecutive naturals, for example, 3171 + ... + 3400.

It is an arithmetic number, because the mean of its divisors is an integer number (118296).

2⁷⁵⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

755665 is a deficient number, since it is larger than the sum of its proper divisors (190703).

755665 is a wasteful number, since it uses less digits than its factorization.

755665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599.

The product of its digits is 31500, while the sum is 34.

The square root of 755665 is about 869.2899401235. The cubic root of 755665 is about 91.0842113838.

The spelling of 755665 in words is "seven hundred fifty-five thousand, six hundred sixty-five".