23661306 has 12 divisors (see below), whose sum is σ = 51266202. Its totient is φ = 7887096.

The previous prime is 23661283. The next prime is 23661311. The reversal of 23661306 is 60316632.

It can be written as a sum of positive squares in only one way, i.e., 15280281 + 8381025 = 3909^2 + 2895^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 23661306.

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 5 ways as a sum of consecutive naturals, for example, 657241 + ... + 657276.

Almost surely, 2^23661306 is an apocalyptic number.

23661306 is an abundant number, since it is smaller than the sum of its proper divisors (27604896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23661306 is a wasteful number, since it uses less digits than its factorization.

23661306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314525 (or 1314522 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 23661306 is about 4864.2888483313. The cubic root of 23661306 is about 287.0865881743.

Adding to 23661306 its reverse (60316632), we get a palindrome (83977938).

The spelling of 23661306 in words is "twenty-three million, six hundred sixty-one thousand, three hundred six".