12694999 has 2 divisors, whose sum is σ = 12695000. Its totient is φ = 12694998.

The previous prime is 12694991. The next prime is 12695017. The reversal of 12694999 is 99949621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12694999 - 2³ = 12694991 is a prime.

It is a super-2 number, since 2×12694999² = 322325999220002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12694991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347499 + 6347500.

It is an arithmetic number, because the mean of its divisors is an integer number (6347500).

Almost surely, 2^12694999 is an apocalyptic number.

12694999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12694999 is an equidigital number, since it uses as much as digits as its factorization.

12694999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 12694999 is about 3563.0042099330. The cubic root of 12694999 is about 233.2800270518.

The spelling of 12694999 in words is "twelve million, six hundred ninety-four thousand, nine hundred ninety-nine".