23690705 has 4 divisors (see below), whose sum is σ = 28428852. Its totient is φ = 18952560.

The previous prime is 23690687. The next prime is 23690717. The reversal of 23690705 is 50709632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17380561 + 6310144 = 4169^2 + 2512^2 .

It is not a de Polignac number, because 23690705 - 2¹⁰ = 23689681 is a prime.

It is a super-2 number, since 2×23690705² = 1122499006794050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369066 + ... + 2369075.

It is an arithmetic number, because the mean of its divisors is an integer number (7107213).

Almost surely, 2^23690705 is an apocalyptic number.

It is an amenable number.

23690705 is a deficient number, since it is larger than the sum of its proper divisors (4738147).

23690705 is an equidigital number, since it uses as much as digits as its factorization.

23690705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738146.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 23690705 is about 4867.3098319297. The cubic root of 23690705 is about 287.2054399605.

The spelling of 23690705 in words is "twenty-three million, six hundred ninety thousand, seven hundred five".