609215 has 4 divisors (see below), whose sum is σ = 731064. Its totient is φ = 487368.

The previous prime is 609209. The next prime is 609221. The reversal of 609215 is 512906.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (609209) and next prime (609221).

It is a cyclic number.

It is not a de Polignac number, because 609215 - 2⁴ = 609199 is a prime.

It is a super-2 number, since 2×609215² = 742285832450, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 609215.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60917 + ... + 60926.

It is an arithmetic number, because the mean of its divisors is an integer number (182766).

2⁶⁰⁹²¹⁵ is an apocalyptic number.

609215 is a deficient number, since it is larger than the sum of its proper divisors (121849).

609215 is a wasteful number, since it uses less digits than its factorization.

609215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121848.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 609215 is about 780.5222610535. The cubic root of 609215 is about 84.7728653393.

The spelling of 609215 in words is "six hundred nine thousand, two hundred fifteen".