15368987 has 2 divisors, whose sum is σ = 15368988. Its totient is φ = 15368986.

The previous prime is 15368959. The next prime is 15368989. The reversal of 15368987 is 78986351.

It is a happy number.

15368987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78986351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15368987 - 2⁶ = 15368923 is a prime.

It is a super-2 number, since 2×15368987² = 472411522812338, which contains 22 as substring.

Together with 15368989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15368989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7684493 + 7684494.

It is an arithmetic number, because the mean of its divisors is an integer number (7684494).

Almost surely, 2^15368987 is an apocalyptic number.

15368987 is a deficient number, since it is larger than the sum of its proper divisors (1).

15368987 is an equidigital number, since it uses as much as digits as its factorization.

15368987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 15368987 is about 3920.3299606028. The cubic root of 15368987 is about 248.6270714036.

The spelling of 15368987 in words is "fifteen million, three hundred sixty-eight thousand, nine hundred eighty-seven".