655863393 has 16 divisors (see below), whose sum is σ = 892731456. Its totient is φ = 428151360.

The previous prime is 655863379. The next prime is 655863409. The reversal of 655863393 is 393368556.

It is not a de Polignac number, because 655863393 - 2¹³ = 655855201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655863323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83203 + ... + 90743.

It is an arithmetic number, because the mean of its divisors is an integer number (55795716).

Almost surely, 2^655863393 is an apocalyptic number.

It is an amenable number.

655863393 is a deficient number, since it is larger than the sum of its proper divisors (236868063).

655863393 is a wasteful number, since it uses less digits than its factorization.

655863393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8144.

The product of its digits is 1749600, while the sum is 48.

The square root of 655863393 is about 25609.8300072453. The cubic root of 655863393 is about 868.8359792896.

The spelling of 655863393 in words is "six hundred fifty-five million, eight hundred sixty-three thousand, three hundred ninety-three".