1368987 has 4 divisors (see below), whose sum is σ = 1825320. Its totient is φ = 912656.

The previous prime is 1368979. The next prime is 1368989. The reversal of 1368987 is 7898631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1368987 - 2³ = 1368979 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1368989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228162 + ... + 228167.

It is an arithmetic number, because the mean of its divisors is an integer number (456330).

2^1368987 is an apocalyptic number.

1368987 is a deficient number, since it is larger than the sum of its proper divisors (456333).

1368987 is an equidigital number, since it uses as much as digits as its factorization.

1368987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456332.

The product of its digits is 72576, while the sum is 42.

The square root of 1368987 is about 1170.0371788965. The cubic root of 1368987 is about 111.0366732162.

The spelling of 1368987 in words is "one million, three hundred sixty-eight thousand, nine hundred eighty-seven".