23491066 has 4 divisors (see below), whose sum is σ = 35236602. Its totient is φ = 11745532.

The previous prime is 23491057. The next prime is 23491067. The reversal of 23491066 is 66019432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17464041 + 6027025 = 4179^2 + 2455^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23491067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5872765 + ... + 5872768.

Almost surely, 2^23491066 is an apocalyptic number.

23491066 is a deficient number, since it is larger than the sum of its proper divisors (11745536).

23491066 is a wasteful number, since it uses less digits than its factorization.

23491066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745535.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 23491066 is about 4846.7582980792. The cubic root of 23491066 is about 286.3964134695.

The spelling of 23491066 in words is "twenty-three million, four hundred ninety-one thousand, sixty-six".