1156887 has 12 divisors (see below), whose sum is σ = 1682304. Its totient is φ = 766080.

The previous prime is 1156873. The next prime is 1156907. The reversal of 1156887 is 7886511.

1156887 is a `hidden beast` number, since 11 + 568 + 87 = 666.

It is not a de Polignac number, because 1156887 - 2⁶ = 1156823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1383 + ... + 2055.

It is an arithmetic number, because the mean of its divisors is an integer number (140192).

2^1156887 is an apocalyptic number.

1156887 is a deficient number, since it is larger than the sum of its proper divisors (525417).

1156887 is a wasteful number, since it uses less digits than its factorization.

1156887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 867 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 1156887 is about 1075.5868165797. The cubic root of 1156887 is about 104.9776823316.

The spelling of 1156887 in words is "one million, one hundred fifty-six thousand, eight hundred eighty-seven".