23641605 has 64 divisors (see below), whose sum is σ = 47712000. Its totient is φ = 11010816.

The previous prime is 23641591. The next prime is 23641613. The reversal of 23641605 is 50614632.

It is not a de Polignac number, because 23641605 - 2⁵ = 23641573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32991 + ... + 33699.

It is an arithmetic number, because the mean of its divisors is an integer number (745500).

Almost surely, 2^23641605 is an apocalyptic number.

It is an amenable number.

23641605 is an abundant number, since it is smaller than the sum of its proper divisors (24070395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23641605 is a wasteful number, since it uses less digits than its factorization.

23641605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23641605 is about 4862.2633618511. The cubic root of 23641605 is about 287.0068875392.

It can be divided in two parts, 2364 and 1605, that added together give a square (3969 = 63²).

The spelling of 23641605 in words is "twenty-three million, six hundred forty-one thousand, six hundred five".