655020493 has 4 divisors (see below), whose sum is σ = 655072288. Its totient is φ = 654968700.

The previous prime is 655020491. The next prime is 655020517. The reversal of 655020493 is 394020556.

655020493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 655020493 - 2¹ = 655020491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655020491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7018 + ... + 36868.

It is an arithmetic number, because the mean of its divisors is an integer number (163768072).

Almost surely, 2^655020493 is an apocalyptic number.

It is an amenable number.

655020493 is a deficient number, since it is larger than the sum of its proper divisors (51795).

655020493 is a wasteful number, since it uses less digits than its factorization.

655020493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51794.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 655020493 is about 25593.3681448925. The cubic root of 655020493 is about 868.4636172965.

The spelling of 655020493 in words is "six hundred fifty-five million, twenty thousand, four hundred ninety-three".