12694971 has 16 divisors (see below), whose sum is σ = 18230400. Its totient is φ = 7828608.

The previous prime is 12694901. The next prime is 12694987. The reversal of 12694971 is 17949621.

It is a de Polignac number, because none of the positive numbers 2^k-12694971 is a prime.

It is a super-2 number, since 2×12694971² = 322324577381682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12694901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900 + ... + 5118.

It is an arithmetic number, because the mean of its divisors is an integer number (1139400).

Almost surely, 2^12694971 is an apocalyptic number.

12694971 is a deficient number, since it is larger than the sum of its proper divisors (5535429).

12694971 is a wasteful number, since it uses less digits than its factorization.

12694971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298.

The product of its digits is 27216, while the sum is 39.

The square root of 12694971 is about 3563.0002806624. Note that the first 3 decimals coincide. The cubic root of 12694971 is about 233.2798555448.

The spelling of 12694971 in words is "twelve million, six hundred ninety-four thousand, nine hundred seventy-one".