12620505 has 16 divisors (see below), whose sum is σ = 20341440. Its totient is φ = 6681408.

The previous prime is 12620501. The next prime is 12620521. The reversal of 12620505 is 50502621.

It is not a de Polignac number, because 12620505 - 2² = 12620501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12620501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (1271340).

Almost surely, 2^12620505 is an apocalyptic number.

12620505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12620505 is a deficient number, since it is larger than the sum of its proper divisors (7720935).

12620505 is a wasteful number, since it uses less digits than its factorization.

12620505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12620505 is about 3552.5350103834. The cubic root of 12620505 is about 232.8228374462.

The spelling of 12620505 in words is "twelve million, six hundred twenty thousand, five hundred five".