655020270 has 80 divisors (see below), whose sum is σ = 1767525408. Its totient is φ = 174052800.

The previous prime is 655020263. The next prime is 655020281. The reversal of 655020270 is 72020556.

655020270 is a `hidden beast` number, since 655 + 0 + 2 + 0 + 2 + 7 + 0 = 666.

655020270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×655020270² = 858103108221745800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 255495 + ... + 258045.

Almost surely, 2^655020270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655020270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883762704).

655020270 is an abundant number, since it is smaller than the sum of its proper divisors (1112505138).

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

655020270 is a wasteful number, since it uses less digits than its factorization.

655020270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2878 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 655020270 is about 25593.3637882948. The cubic root of 655020270 is about 868.4635187411.

The spelling of 655020270 in words is "six hundred fifty-five million, twenty thousand, two hundred seventy".