655370240 has 192 divisors, whose sum is σ = 1849236480. Its totient is φ = 218234880.

The previous prime is 655370237. The next prime is 655370251. The reversal of 655370240 is 42073556.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 655370197 and 655370206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2938769 + ... + 2938991.

It is an arithmetic number, because the mean of its divisors is an integer number (9631440).

Almost surely, 2^655370240 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 655370240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924618240).

655370240 is an abundant number, since it is smaller than the sum of its proper divisors (1193866240).

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

655370240 is a wasteful number, since it uses less digits than its factorization.

655370240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 655370240 is about 25600.1999992188. The cubic root of 655370240 is about 868.6181613162.

The spelling of 655370240 in words is "six hundred fifty-five million, three hundred seventy thousand, two hundred forty".