755640 has 48 divisors (see below), whose sum is σ = 2457000. Its totient is φ = 201408.

The previous prime is 755627. The next prime is 755663. The reversal of 755640 is 46557.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 690 + ... + 1409.

2⁷⁵⁵⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

755640 is an abundant number, since it is smaller than the sum of its proper divisors (1701360).

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

755640 is a wasteful number, since it uses less digits than its factorization.

755640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 755640 is about 869.2755604525. The cubic root of 755640 is about 91.0832069129.

The spelling of 755640 in words is "seven hundred fifty-five thousand, six hundred forty".