12497805 has 54 divisors (see below), whose sum is σ = 23778378. Its totient is φ = 6071040.

The previous prime is 12497791. The next prime is 12497827. The reversal of 12497805 is 50879421.

It can be written as a sum of positive squares in 3 ways, for example, as 4186116 + 8311689 = 2046^2 + 2883^2 .

It is not a de Polignac number, because 12497805 - 2⁴ = 12497789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12497805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 403140 + ... + 403170.

Almost surely, 2^12497805 is an apocalyptic number.

12497805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12497805 is a deficient number, since it is larger than the sum of its proper divisors (11280573).

12497805 is a wasteful number, since it uses less digits than its factorization.

12497805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12497805 is about 3535.2234724272. The cubic root of 12497805 is about 232.0658565021.

The spelling of 12497805 in words is "twelve million, four hundred ninety-seven thousand, eight hundred five".