655845620 has 24 divisors (see below), whose sum is σ = 1378406400. Its totient is φ = 262122912.

The previous prime is 655845613. The next prime is 655845649. The reversal of 655845620 is 26548556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12761 + ... + 38399.

It is an arithmetic number, because the mean of its divisors is an integer number (57433600).

Almost surely, 2^655845620 is an apocalyptic number.

It is an amenable number.

655845620 is an abundant number, since it is smaller than the sum of its proper divisors (722560780).

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

655845620 is a wasteful number, since it uses less digits than its factorization.

655845620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26927 (or 26925 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 655845620 is about 25609.4830092292. The cubic root of 655845620 is about 868.8281311302.

The spelling of 655845620 in words is "six hundred fifty-five million, eight hundred forty-five thousand, six hundred twenty".