1198887 has 8 divisors (see below), whose sum is σ = 1610736. Its totient is φ = 793152.

The previous prime is 1198877. The next prime is 1198903. The reversal of 1198887 is 7888911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1198887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (201342).

2^1198887 is an apocalyptic number.

1198887 is a deficient number, since it is larger than the sum of its proper divisors (411849).

1198887 is a wasteful number, since it uses less digits than its factorization.

1198887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057.

The product of its digits is 32256, while the sum is 42.

The square root of 1198887 is about 1094.9369844881. The cubic root of 1198887 is about 106.2329928949.

The spelling of 1198887 in words is "one million, one hundred ninety-eight thousand, eight hundred eighty-seven".