12697651 has 2 divisors, whose sum is σ = 12697652. Its totient is φ = 12697650.

The previous prime is 12697627. The next prime is 12697669. The reversal of 12697651 is 15679621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12697651 - 2⁷ = 12697523 is a prime.

It is a super-2 number, since 2×12697651² = 322460681835602, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12697651.

It is not a weakly prime, because it can be changed into another prime (12697151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6348825 + 6348826.

It is an arithmetic number, because the mean of its divisors is an integer number (6348826).

Almost surely, 2^12697651 is an apocalyptic number.

12697651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12697651 is an equidigital number, since it uses as much as digits as its factorization.

12697651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 12697651 is about 3563.3763483528. The cubic root of 12697651 is about 233.2962700768.

The spelling of 12697651 in words is "twelve million, six hundred ninety-seven thousand, six hundred fifty-one".