12571667 has 2 divisors, whose sum is σ = 12571668. Its totient is φ = 12571666.

The previous prime is 12571651. The next prime is 12571681. The reversal of 12571667 is 76617521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12571667 - 2⁴ = 12571651 is a prime.

It is a super-2 number, since 2×12571667² = 316093622317778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12571697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285833 + 6285834.

It is an arithmetic number, because the mean of its divisors is an integer number (6285834).

Almost surely, 2^12571667 is an apocalyptic number.

12571667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571667 is an equidigital number, since it uses as much as digits as its factorization.

12571667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 12571667 is about 3545.6546645154. The cubic root of 12571667 is about 232.5221283906.

The spelling of 12571667 in words is "twelve million, five hundred seventy-one thousand, six hundred sixty-seven".