12987907 has 2 divisors, whose sum is σ = 12987908. Its totient is φ = 12987906.

The previous prime is 12987899. The next prime is 12987917. The reversal of 12987907 is 70978921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12987907 - 2³ = 12987899 is a prime.

It is not a weakly prime, because it can be changed into another prime (12987917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6493953 + 6493954.

It is an arithmetic number, because the mean of its divisors is an integer number (6493954).

Almost surely, 2^12987907 is an apocalyptic number.

12987907 is a deficient number, since it is larger than the sum of its proper divisors (1).

12987907 is an equidigital number, since it uses as much as digits as its factorization.

12987907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 12987907 is about 3603.8738879156. The cubic root of 12987907 is about 235.0605366903.

The spelling of 12987907 in words is "twelve million, nine hundred eighty-seven thousand, nine hundred seven".