12775690 has 8 divisors (see below), whose sum is σ = 22996260. Its totient is φ = 5110272.

The previous prime is 12775663. The next prime is 12775691. The reversal of 12775690 is 9657721.

It can be written as a sum of positive squares in 2 ways, for example, as 12581209 + 194481 = 3547^2 + 441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12775690² = 326436509952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12775691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638775 + ... + 638794.

Almost surely, 2^12775690 is an apocalyptic number.

12775690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12775690 is a deficient number, since it is larger than the sum of its proper divisors (10220570).

12775690 is a wasteful number, since it uses less digits than its factorization.

12775690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277576.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 12775690 is about 3574.3097235690. The cubic root of 12775690 is about 233.7732358916.

The spelling of 12775690 in words is "twelve million, seven hundred seventy-five thousand, six hundred ninety".