655020500 has 24 divisors (see below), whose sum is σ = 1430565864. Its totient is φ = 262008000.

The previous prime is 655020491. The next prime is 655020517. The reversal of 655020500 is 5020556.

It can be written as a sum of positive squares in 4 ways, for example, as 16144324 + 638876176 = 4018^2 + 25276^2 .

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, 654521 + ... + 655520.

It is an arithmetic number, because the mean of its divisors is an integer number (59606911).

Almost surely, 2^655020500 is an apocalyptic number.

It is an amenable number.

655020500 is an abundant number, since it is smaller than the sum of its proper divisors (775545364).

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

655020500 is a wasteful number, since it uses less digits than its factorization.

655020500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310060 (or 1310048 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 655020500 is about 25593.3682816467. The cubic root of 655020500 is about 868.4636203902.

The spelling of 655020500 in words is "six hundred fifty-five million, twenty thousand, five hundred".