609887 has 2 divisors, whose sum is σ = 609888. Its totient is φ = 609886.

The previous prime is 609877. The next prime is 609907. The reversal of 609887 is 788906.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609887 - 2¹⁰ = 608863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304943 + 304944.

It is an arithmetic number, because the mean of its divisors is an integer number (304944).

2⁶⁰⁹⁸⁸⁷ is an apocalyptic number.

609887 is a deficient number, since it is larger than the sum of its proper divisors (1).

609887 is an equidigital number, since it uses as much as digits as its factorization.

609887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 609887 is about 780.9526234030. The cubic root of 609887 is about 84.8040237055.

The spelling of 609887 in words is "six hundred nine thousand, eight hundred eighty-seven".