609166261 has 8 divisors (see below), whose sum is σ = 682506144. Its totient is φ = 538819920.

The previous prime is 609166223. The next prime is 609166289. The reversal of 609166261 is 162661906.

609166261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 609166261 - 2¹⁵ = 609133493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 609166261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609166361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747955 + ... + 748768.

It is an arithmetic number, because the mean of its divisors is an integer number (85313268).

Almost surely, 2^609166261 is an apocalyptic number.

It is an amenable number.

609166261 is a deficient number, since it is larger than the sum of its proper divisors (73339883).

609166261 is a wasteful number, since it uses less digits than its factorization.

609166261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496771.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 609166261 is about 24681.2937464793. The cubic root of 609166261 is about 847.7060458574.

The spelling of 609166261 in words is "six hundred nine million, one hundred sixty-six thousand, two hundred sixty-one".