655360239 has 4 divisors (see below), whose sum is σ = 873813656. Its totient is φ = 436906824.

The previous prime is 655360219. The next prime is 655360253. The reversal of 655360239 is 932063556.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 655360239 - 2⁵ = 655360207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655360197 and 655360206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655360219) 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, 109226704 + ... + 109226709.

It is an arithmetic number, because the mean of its divisors is an integer number (218453414).

Almost surely, 2^655360239 is an apocalyptic number.

655360239 is a deficient number, since it is larger than the sum of its proper divisors (218453417).

655360239 is a wasteful number, since it uses less digits than its factorization.

655360239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218453416.

The product of its (nonzero) digits is 145800, while the sum is 39.

The square root of 655360239 is about 25600.0046679683. The cubic root of 655360239 is about 868.6137429005.

The spelling of 655360239 in words is "six hundred fifty-five million, three hundred sixty thousand, two hundred thirty-nine".