611899 has 4 divisors (see below), whose sum is σ = 614680. Its totient is φ = 609120.

The previous prime is 611887. The next prime is 611903. The reversal of 611899 is 998116.

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 611899 - 2¹⁷ = 480827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (153670).

2⁶¹¹⁸⁹⁹ is an apocalyptic number.

611899 is a deficient number, since it is larger than the sum of its proper divisors (2781).

611899 is a wasteful number, since it uses less digits than its factorization.

611899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780.

The product of its digits is 3888, while the sum is 34.

The square root of 611899 is about 782.2397330742. The cubic root of 611899 is about 84.8971767043.

The spelling of 611899 in words is "six hundred eleven thousand, eight hundred ninety-nine".