609261 has 16 divisors (see below), whose sum is σ = 864000. Its totient is φ = 381248.

The previous prime is 609253. The next prime is 609269. The reversal of 609261 is 162906.

It is an interprime number because it is at equal distance from previous prime (609253) and next prime (609269).

It is a cyclic number.

It is not a de Polignac number, because 609261 - 2³ = 609253 is a prime.

It is a super-2 number, since 2×609261² = 742397932242, which contains 22 as substring.

609261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4015 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (54000).

2⁶⁰⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

609261 is a deficient number, since it is larger than the sum of its proper divisors (254739).

609261 is a wasteful number, since it uses less digits than its factorization.

609261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 609261 is about 780.5517279463. The cubic root of 609261 is about 84.7749989340.

The spelling of 609261 in words is "six hundred nine thousand, two hundred sixty-one".