23690105 has 4 divisors (see below), whose sum is σ = 28428132. Its totient is φ = 18952080.

The previous prime is 23690083. The next prime is 23690137. The reversal of 23690105 is 50109632.

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 18181696 + 5508409 = 4264^2 + 2347^2 .

It is not a de Polignac number, because 23690105 - 2⁶ = 23690041 is a prime.

It is a super-2 number, since 2×23690105² = 1122442149822050, 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, 2369006 + ... + 2369015.

It is an arithmetic number, because the mean of its divisors is an integer number (7107033).

Almost surely, 2^23690105 is an apocalyptic number.

It is an amenable number.

23690105 is a deficient number, since it is larger than the sum of its proper divisors (4738027).

23690105 is an equidigital number, since it uses as much as digits as its factorization.

23690105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738026.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 23690105 is about 4867.2481958495. The cubic root of 23690105 is about 287.2030153145.

Adding to 23690105 its reverse (50109632), we get a palindrome (73799737).

The spelling of 23690105 in words is "twenty-three million, six hundred ninety thousand, one hundred five".