755645120 has 56 divisors (see below), whose sum is σ = 1802130000. Its totient is φ = 301796352.

The previous prime is 755645041. The next prime is 755645159. The reversal of 755645120 is 21546557.

It is a Cunningham number, because it is equal to 27489²-1.

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, 273506 + ... + 276254.

Almost surely, 2^755645120 is an apocalyptic number.

It is an amenable number.

755645120 is an abundant number, since it is smaller than the sum of its proper divisors (1046484880).

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

755645120 is a wasteful number, since it uses less digits than its factorization.

755645120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625 (or 3615 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 755645120 is about 27488.9999818109. Note that the first 4 decimals coincide. The cubic root of 755645120 is about 910.8341263038.

The spelling of 755645120 in words is "seven hundred fifty-five million, six hundred forty-five thousand, one hundred twenty".