609995 has 8 divisors (see below), whose sum is σ = 770640. Its totient is φ = 462240.

The previous prime is 609991. The next prime is 609997. The reversal of 609995 is 599906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609995 - 2² = 609991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609991) 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 7 ways as a sum of consecutive naturals, for example, 3116 + ... + 3305.

It is an arithmetic number, because the mean of its divisors is an integer number (96330).

2⁶⁰⁹⁹⁹⁵ is an apocalyptic number.

609995 is a deficient number, since it is larger than the sum of its proper divisors (160645).

609995 is a wasteful number, since it uses less digits than its factorization.

609995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 609995 is about 781.0217666621. The cubic root of 609995 is about 84.8090291650.

The spelling of 609995 in words is "six hundred nine thousand, nine hundred ninety-five".