12623565 has 16 divisors (see below), whose sum is σ = 20304000. Its totient is φ = 6697152.

The previous prime is 12623557. The next prime is 12623579. The reversal of 12623565 is 56532621.

12623565 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12623565 - 2³ = 12623557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871 + ... + 5099.

It is an arithmetic number, because the mean of its divisors is an integer number (1269000).

Almost surely, 2^12623565 is an apocalyptic number.

12623565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12623565 is a deficient number, since it is larger than the sum of its proper divisors (7680435).

12623565 is a wasteful number, since it uses less digits than its factorization.

12623565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436.

The product of its digits is 10800, while the sum is 30.

The square root of 12623565 is about 3552.9656626542. The cubic root of 12623565 is about 232.8416528663.

The spelling of 12623565 in words is "twelve million, six hundred twenty-three thousand, five hundred sixty-five".