23670725 has 24 divisors (see below), whose sum is σ = 31867752. Its totient is φ = 17337600.

The previous prime is 23670721. The next prime is 23670737. The reversal of 23670725 is 52707632.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 13315201 + 10355524 = 3649^2 + 3218^2 .

It is not a de Polignac number, because 23670725 - 2² = 23670721 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23670691 and 23670700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23670721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56015 + ... + 56435.

It is an arithmetic number, because the mean of its divisors is an integer number (1327823).

Almost surely, 2^23670725 is an apocalyptic number.

23670725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23670725 is a deficient number, since it is larger than the sum of its proper divisors (8197027).

23670725 is a wasteful number, since it uses less digits than its factorization.

23670725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 23670725 is about 4865.2569305228. The cubic root of 23670725 is about 287.1246772221.

The spelling of 23670725 in words is "twenty-three million, six hundred seventy thousand, seven hundred twenty-five".