7003987 has 4 divisors (see below), whose sum is σ = 7153056. Its totient is φ = 6854920.

The previous prime is 7003963. The next prime is 7003991. The reversal of 7003987 is 7893007.

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 7003987 - 2⁷ = 7003859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7003957) 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, 74464 + ... + 74557.

It is an arithmetic number, because the mean of its divisors is an integer number (1788264).

Almost surely, 2^7003987 is an apocalyptic number.

7003987 is a deficient number, since it is larger than the sum of its proper divisors (149069).

7003987 is a wasteful number, since it uses less digits than its factorization.

7003987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149068.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 7003987 is about 2646.5046759830. The cubic root of 7003987 is about 191.3294297490.

The spelling of 7003987 in words is "seven million, three thousand, nine hundred eighty-seven".