661076752 has 20 divisors (see below), whose sum is σ = 1463813056. Its totient is φ = 283318560.

The previous prime is 661076749. The next prime is 661076753. The reversal of 661076752 is 257670166.

It is a happy number.

661076752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (661076753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951124 + ... + 2951347.

Almost surely, 2^661076752 is an apocalyptic number.

It is an amenable number.

661076752 is an abundant number, since it is smaller than the sum of its proper divisors (802736304).

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

661076752 is a wasteful number, since it uses less digits than its factorization.

661076752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5902486 (or 5902480 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 661076752 is about 25711.4128744416. The cubic root of 661076752 is about 871.1319884182.

The spelling of 661076752 in words is "six hundred sixty-one million, seventy-six thousand, seven hundred fifty-two".