1308887 has 2 divisors, whose sum is σ = 1308888. Its totient is φ = 1308886.

The previous prime is 1308883. The next prime is 1308899. The reversal of 1308887 is 7888031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1308887 - 2² = 1308883 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654443 + 654444.

It is an arithmetic number, because the mean of its divisors is an integer number (654444).

2^1308887 is an apocalyptic number.

1308887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308887 is an equidigital number, since it uses as much as digits as its factorization.

1308887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1308887 is about 1144.0659946000. The cubic root of 1308887 is about 109.3874213920.

The spelling of 1308887 in words is "one million, three hundred eight thousand, eight hundred eighty-seven".