23661806 has 24 divisors (see below), whose sum is σ = 41799240. Its totient is φ = 10015152.

The previous prime is 23661791. The next prime is 23661809. The reversal of 23661806 is 60816632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23661809) 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 11 ways as a sum of consecutive naturals, for example, 6680 + ... + 9588.

It is an arithmetic number, because the mean of its divisors is an integer number (1741635).

Almost surely, 2^23661806 is an apocalyptic number.

23661806 is a deficient number, since it is larger than the sum of its proper divisors (18137434).

23661806 is a wasteful number, since it uses less digits than its factorization.

23661806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008 (or 3001 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 23661806 is about 4864.3402430340. The cubic root of 23661806 is about 287.0886103547.

The spelling of 23661806 in words is "twenty-three million, six hundred sixty-one thousand, eight hundred six".