655921152 has 156 divisors (see below), whose sum is σ = 1967805840. Its totient is φ = 218308608.

The previous prime is 655921151. The next prime is 655921177. The reversal of 655921152 is 251129556.

655921152 is a `hidden beast` number, since 6 + 5 + 592 + 11 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (655921151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 994999 + ... + 995657.

It is an arithmetic number, because the mean of its divisors is an integer number (12614140).

Almost surely, 2^655921152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655921152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983902920).

655921152 is an abundant number, since it is smaller than the sum of its proper divisors (1311884688).

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

655921152 is an frugal number, since it uses more digits than its factorization.

655921152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 664 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 655921152 is about 25610.9576548789. The cubic root of 655921152 is about 868.8614833934.

The spelling of 655921152 in words is "six hundred fifty-five million, nine hundred twenty-one thousand, one hundred fifty-two".