655245660 has 48 divisors (see below), whose sum is σ = 1839944736. Its totient is φ = 174231552.

The previous prime is 655245611. The next prime is 655245683. The reversal of 655245660 is 66542556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5712 + ... + 36648.

It is an arithmetic number, because the mean of its divisors is an integer number (38332182).

Almost surely, 2^655245660 is an apocalyptic number.

655245660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655245660 is an abundant number, since it is smaller than the sum of its proper divisors (1184699076).

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

655245660 is a wasteful number, since it uses less digits than its factorization.

655245660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31302 (or 31300 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 655245660 is about 25597.7666994603. The cubic root of 655245660 is about 868.5631189898.

The spelling of 655245660 in words is "six hundred fifty-five million, two hundred forty-five thousand, six hundred sixty".