12797658 has 24 divisors (see below), whose sum is σ = 28406196. Its totient is φ = 4161600.

The previous prime is 12797641. The next prime is 12797669. The reversal of 12797658 is 85679721.

12797658 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 31329 = 3573^2 + 177^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7933 + ... + 9408.

Almost surely, 2^12797658 is an apocalyptic number.

12797658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12797658 is an abundant number, since it is smaller than the sum of its proper divisors (15608538).

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

12797658 is a wasteful number, since it uses less digits than its factorization.

12797658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17390 (or 17387 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 12797658 is about 3577.3814445765. The cubic root of 12797658 is about 233.9071514169.

The spelling of 12797658 in words is "twelve million, seven hundred ninety-seven thousand, six hundred fifty-eight".