655343740 has 48 divisors (see below), whose sum is σ = 1447094880. Its totient is φ = 248935680.

The previous prime is 655343707. The next prime is 655343753. The reversal of 655343740 is 47343556.

655343740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 655343740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26119 + ... + 44641.

It is an arithmetic number, because the mean of its divisors is an integer number (30147810).

Almost surely, 2^655343740 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 655343740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723547440).

655343740 is an abundant number, since it is smaller than the sum of its proper divisors (791751140).

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

655343740 is a wasteful number, since it uses less digits than its factorization.

655343740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18622 (or 18620 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 655343740 is about 25599.6824199051. The cubic root of 655343740 is about 868.6064535871.

The spelling of 655343740 in words is "six hundred fifty-five million, three hundred forty-three thousand, seven hundred forty".