23206705 has 8 divisors (see below), whose sum is σ = 28240704. Its totient is φ = 18303600.

The previous prime is 23206643. The next prime is 23206727. The reversal of 23206705 is 50760232.

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

It is not a de Polignac number, because 23206705 - 2⁷ = 23206577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23206705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32331 + ... + 33040.

It is an arithmetic number, because the mean of its divisors is an integer number (3530088).

Almost surely, 2^23206705 is an apocalyptic number.

It is an amenable number.

23206705 is a deficient number, since it is larger than the sum of its proper divisors (5033999).

23206705 is an equidigital number, since it uses as much as digits as its factorization.

23206705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65447.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 23206705 is about 4817.3338061629. Note that the first 3 decimals coincide. The cubic root of 23206705 is about 285.2361026995.

Adding to 23206705 its reverse (50760232), we get a palindrome (73966937).

It can be divided in two parts, 2320 and 6705, that added together give a square (9025 = 95²).

The spelling of 23206705 in words is "twenty-three million, two hundred six thousand, seven hundred five".