7981003 has 4 divisors (see below), whose sum is σ = 8256240. Its totient is φ = 7705768.

The previous prime is 7980997. The next prime is 7981013. The reversal of 7981003 is 3001897.

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 7981003 - 2⁹ = 7980491 is a prime.

It is a Duffinian number.

7981003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7981013) 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, 137575 + ... + 137632.

It is an arithmetic number, because the mean of its divisors is an integer number (2064060).

Almost surely, 2^7981003 is an apocalyptic number.

7981003 is a deficient number, since it is larger than the sum of its proper divisors (275237).

7981003 is a wasteful number, since it uses less digits than its factorization.

7981003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275236.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 7981003 is about 2825.0669018627. The cubic root of 7981003 is about 199.8415661935.

The spelling of 7981003 in words is "seven million, nine hundred eighty-one thousand, three".