7018987 has 4 divisors (see below), whose sum is σ = 7123816. Its totient is φ = 6914160.

The previous prime is 7018981. The next prime is 7018997. The reversal of 7018987 is 7898107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7898107 = 7 ⋅1128301.

It is a cyclic number.

It is not a de Polignac number, because 7018987 - 2¹⁵ = 6986219 is a prime.

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

It is a Duffinian number.

7018987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7018981) 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, 52314 + ... + 52447.

It is an arithmetic number, because the mean of its divisors is an integer number (1780954).

Almost surely, 2^7018987 is an apocalyptic number.

7018987 is a deficient number, since it is larger than the sum of its proper divisors (104829).

7018987 is a wasteful number, since it uses less digits than its factorization.

7018987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104828.

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

The square root of 7018987 is about 2649.3370868955. The cubic root of 7018987 is about 191.4659184418.

The spelling of 7018987 in words is "seven million, eighteen thousand, nine hundred eighty-seven".