690003 has 6 divisors (see below), whose sum is σ = 996684. Its totient is φ = 459996.

The previous prime is 689987. The next prime is 690037. The reversal of 690003 is 300096.

690003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690003 - 2⁴ = 689987 is a prime.

It is a super-2 number, since 2×690003² = 952208280018, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (690073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38325 + ... + 38342.

It is an arithmetic number, because the mean of its divisors is an integer number (166114).

2⁶⁹⁰⁰⁰³ is an apocalyptic number.

690003 is a deficient number, since it is larger than the sum of its proper divisors (306681).

690003 is a wasteful number, since it uses less digits than its factorization.

690003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76673 (or 76670 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 690003 is about 830.6641920776. The cubic root of 690003 is about 88.3656872899.

Adding to 690003 its reverse (300096), we get a palindrome (990099).

It can be divided in two parts, 6 and 90003, that added together give a palindrome (90009).

The spelling of 690003 in words is "six hundred ninety thousand, three".