1078987 has 16 divisors (see below), whose sum is σ = 1354752. Its totient is φ = 836640.

The previous prime is 1078981. The next prime is 1078993. The reversal of 1078987 is 7898701.

It is an interprime number because it is at equal distance from previous prime (1078981) and next prime (1078993).

It is not a de Polignac number, because 1078987 - 2¹⁹ = 554699 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1078981) 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 15 ways as a sum of consecutive naturals, for example, 6378 + ... + 6544.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2^1078987 is an apocalyptic number.

1078987 is a deficient number, since it is larger than the sum of its proper divisors (275765).

1078987 is a wasteful number, since it uses less digits than its factorization.

1078987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1078987 is about 1038.7429903494. The cubic root of 1078987 is about 102.5664688840.

The spelling of 1078987 in words is "one million, seventy-eight thousand, nine hundred eighty-seven".