23261609 has 8 divisors (see below), whose sum is σ = 26654208. Its totient is φ = 19886400.

The previous prime is 23261603. The next prime is 23261617. The reversal of 23261609 is 90616232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23261609 is a prime.

It is a super-2 number, since 2×23261609² = 1082204906537762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23261603) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (3331776).

Almost surely, 2^23261609 is an apocalyptic number.

It is an amenable number.

23261609 is a deficient number, since it is larger than the sum of its proper divisors (3392599).

23261609 is an equidigital number, since it uses as much as digits as its factorization.

23261609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8695.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 23261609 is about 4823.0290274888. The cubic root of 23261609 is about 285.4608691895.

The spelling of 23261609 in words is "twenty-three million, two hundred sixty-one thousand, six hundred nine".