755580780 has 36 divisors (see below), whose sum is σ = 2291928912. Its totient is φ = 201488160.

The previous prime is 755580769. The next prime is 755580799. The reversal of 755580780 is 87085557.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2098656 + ... + 2099015.

It is an arithmetic number, because the mean of its divisors is an integer number (63664692).

Almost surely, 2^755580780 is an apocalyptic number.

It is an amenable number.

755580780 is an abundant number, since it is smaller than the sum of its proper divisors (1536348132).

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

755580780 is a wasteful number, since it uses less digits than its factorization.

755580780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197686 (or 4197681 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The square root of 755580780 is about 27487.8296706015. The cubic root of 755580780 is about 910.8082743399.

It can be divided in two parts, 75 and 5580780, that added together give a palindrome (5580855).

The spelling of 755580780 in words is "seven hundred fifty-five million, five hundred eighty thousand, seven hundred eighty".