978003 has 18 divisors (see below), whose sum is σ = 1532076. Its totient is φ = 600912.

The previous prime is 978001. The next prime is 978007. The reversal of 978003 is 300879.

It is a happy number.

It is not a de Polignac number, because 978003 - 2¹ = 978001 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (978001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1200 + ... + 1842.

2⁹⁷⁸⁰⁰³ is an apocalyptic number.

978003 is a deficient number, since it is larger than the sum of its proper divisors (554073).

978003 is a wasteful number, since it uses less digits than its factorization.

978003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 978003 is about 988.9403419823. The cubic root of 978003 is about 99.2613236746.

It can be divided in two parts, 97 and 8003, that added together give a square (8100 = 90²).

The spelling of 978003 in words is "nine hundred seventy-eight thousand, three".