655199 has 4 divisors (see below), whose sum is σ = 661320. Its totient is φ = 649080.

The previous prime is 655181. The next prime is 655211. The reversal of 655199 is 991556.

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

It is a cyclic number.

It is not a de Polignac number, because 655199 - 2⁸ = 654943 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 (655399) 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, 2897 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (165330).

2⁶⁵⁵¹⁹⁹ is an apocalyptic number.

655199 is a deficient number, since it is larger than the sum of its proper divisors (6121).

655199 is a wasteful number, since it uses less digits than its factorization.

655199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120.

The product of its digits is 12150, while the sum is 35.

The square root of 655199 is about 809.4436360859. The cubic root of 655199 is about 86.8542501726.

The spelling of 655199 in words is "six hundred fifty-five thousand, one hundred ninety-nine".