655172338 has 16 divisors (see below), whose sum is σ = 1015993440. Its totient is φ = 316665216.

The previous prime is 655172303. The next prime is 655172347. The reversal of 655172338 is 833271556.

It is a self number, because there is not a number n which added to its sum of digits gives 655172338.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30928 + ... + 47611.

It is an arithmetic number, because the mean of its divisors is an integer number (63499590).

Almost surely, 2^655172338 is an apocalyptic number.

655172338 is a deficient number, since it is larger than the sum of its proper divisors (360821102).

655172338 is a wasteful number, since it uses less digits than its factorization.

655172338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78681.

The product of its digits is 151200, while the sum is 40.

The square root of 655172338 is about 25596.3344641376. The cubic root of 655172338 is about 868.5307203722.

The spelling of 655172338 in words is "six hundred fifty-five million, one hundred seventy-two thousand, three hundred thirty-eight".