755666 has 8 divisors (see below), whose sum is σ = 1157760. Its totient is φ = 369748.

The previous prime is 755663. The next prime is 755681. The reversal of 755666 is 666557.

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

It is a super-2 number, since 2×755666² = 1142062207112, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3926 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (144720).

2⁷⁵⁵⁶⁶⁶ is an apocalyptic number.

755666 is a deficient number, since it is larger than the sum of its proper divisors (402094).

755666 is a wasteful number, since it uses less digits than its factorization.

755666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088.

The product of its digits is 37800, while the sum is 35.

The square root of 755666 is about 869.2905153054. The cubic root of 755666 is about 91.0842515622.

The spelling of 755666 in words is "seven hundred fifty-five thousand, six hundred sixty-six".