12690819 has 12 divisors (see below), whose sum is σ = 18410392. Its totient is φ = 8424000.

The previous prime is 12690817. The next prime is 12690829. The reversal of 12690819 is 91809621.

12690819 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 12690819 - 2¹ = 12690817 is a prime.

It is a super-2 number, since 2×12690819² = 322113773781522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12690817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 757 + ... + 5094.

Almost surely, 2^12690819 is an apocalyptic number.

12690819 is a deficient number, since it is larger than the sum of its proper divisors (5719573).

12690819 is a wasteful number, since it uses less digits than its factorization.

12690819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098 (or 6095 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12690819 is about 3562.4175779939. The cubic root of 12690819 is about 233.2544207073.

It can be divided in two parts, 12 and 690819, that multiplied together give a palindrome (8289828).

The spelling of 12690819 in words is "twelve million, six hundred ninety thousand, eight hundred nineteen".