609886 has 4 divisors (see below), whose sum is σ = 914832. Its totient is φ = 304942.

The previous prime is 609877. The next prime is 609887. The reversal of 609886 is 688906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688906 = 2 ⋅344453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609887) 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 as a sum of consecutive naturals, namely, 152470 + ... + 152473.

It is an arithmetic number, because the mean of its divisors is an integer number (228708).

2⁶⁰⁹⁸⁸⁶ is an apocalyptic number.

609886 is a deficient number, since it is larger than the sum of its proper divisors (304946).

609886 is a wasteful number, since it uses less digits than its factorization.

609886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304945.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 609886 is about 780.9519831590. The cubic root of 609886 is about 84.8039773559.

The spelling of 609886 in words is "six hundred nine thousand, eight hundred eighty-six".