655993238 has 4 divisors (see below), whose sum is σ = 983989860. Its totient is φ = 327996618.

The previous prime is 655993213. The next prime is 655993267. The reversal of 655993238 is 832399556.

655993238 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.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163998308 + ... + 163998311.

It is an arithmetic number, because the mean of its divisors is an integer number (245997465).

Almost surely, 2^655993238 is an apocalyptic number.

655993238 is a deficient number, since it is larger than the sum of its proper divisors (327996622).

655993238 is a wasteful number, since it uses less digits than its factorization.

655993238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327996621.

The product of its digits is 1749600, while the sum is 50.

The square root of 655993238 is about 25612.3649435190. The cubic root of 655993238 is about 868.8933116370.

The spelling of 655993238 in words is "six hundred fifty-five million, nine hundred ninety-three thousand, two hundred thirty-eight".