655145199 has 32 divisors (see below), whose sum is σ = 1006653440. Its totient is φ = 420767136.

The previous prime is 655145159. The next prime is 655145221. The reversal of 655145199 is 991541556.

It is a happy number.

655145199 is a `hidden beast` number, since 6 + 551 + 4 + 5 + 1 + 99 = 666.

It is not a de Polignac number, because 655145199 - 2⁸ = 655144943 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655145149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99714 + ... + 106080.

It is an arithmetic number, because the mean of its divisors is an integer number (31457920).

Almost surely, 2^655145199 is an apocalyptic number.

655145199 is a deficient number, since it is larger than the sum of its proper divisors (351508241).

655145199 is a wasteful number, since it uses less digits than its factorization.

655145199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516 (or 6510 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 655145199 is about 25595.8043241466. The cubic root of 655145199 is about 868.5187279140.

The spelling of 655145199 in words is "six hundred fifty-five million, one hundred forty-five thousand, one hundred ninety-nine".