755720 has 32 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 259008.

The previous prime is 755719. The next prime is 755737. The reversal of 755720 is 27557.

It is a super-2 number, since 2×755720² = 1142225436800, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 755720.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 755720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2⁷⁵⁵⁷²⁰ is an apocalyptic number.

755720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

755720 is an abundant number, since it is smaller than the sum of its proper divisors (1188280).

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

755720 is a wasteful number, since it uses less digits than its factorization.

755720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 755720 is about 869.3215745626. The cubic root of 755720 is about 91.0864211417.

The spelling of 755720 in words is "seven hundred fifty-five thousand, seven hundred twenty".