660477752 has 32 divisors (see below), whose sum is σ = 1409719680. Its totient is φ = 287163360.

The previous prime is 660477709. The next prime is 660477757. The reversal of 660477752 is 257774066.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660477757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161138 + ... + 165185.

It is an arithmetic number, because the mean of its divisors is an integer number (44053740).

Almost surely, 2^660477752 is an apocalyptic number.

It is an amenable number.

660477752 is an abundant number, since it is smaller than the sum of its proper divisors (749241928).

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

660477752 is a wasteful number, since it uses less digits than its factorization.

660477752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326363 (or 326359 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 660477752 is about 25699.7617109576. The cubic root of 660477752 is about 870.8687987347.

The spelling of 660477752 in words is "six hundred sixty million, four hundred seventy-seven thousand, seven hundred fifty-two".