655833213 has 16 divisors (see below), whose sum is σ = 1110405760. Its totient is φ = 374761728.

The previous prime is 655833209. The next prime is 655833221. The reversal of 655833213 is 312338556.

655833213 is a `hidden beast` number, since 65 + 583 + 3 + 2 + 13 = 666.

It is not a de Polignac number, because 655833213 - 2² = 655833209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655833223) 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 15 ways as a sum of consecutive naturals, for example, 1734820 + ... + 1735197.

It is an arithmetic number, because the mean of its divisors is an integer number (69400360).

Almost surely, 2^655833213 is an apocalyptic number.

655833213 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

655833213 is a deficient number, since it is larger than the sum of its proper divisors (454572547).

655833213 is a wasteful number, since it uses less digits than its factorization.

655833213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470033 (or 3470027 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 655833213 is about 25609.2407735958. The cubic root of 655833213 is about 868.8226523923.

The spelling of 655833213 in words is "six hundred fifty-five million, eight hundred thirty-three thousand, two hundred thirteen".