1003660073 has 12 divisors (see below), whose sum is σ = 1090566540. Its totient is φ = 923247936.

The previous prime is 1003660051. The next prime is 1003660081. The reversal of 1003660073 is 3700663001.

It can be written as a sum of positive squares in 6 ways, for example, as 861184 + 1002798889 = 928^2 + 31667^2 .

It is not a de Polignac number, because 1003660073 - 2²² = 999465769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003660373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39383 + ... + 59651.

It is an arithmetic number, because the mean of its divisors is an integer number (90880545).

Almost surely, 2^1003660073 is an apocalyptic number.

1003660073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1003660073 is a deficient number, since it is larger than the sum of its proper divisors (86906467).

1003660073 is a wasteful number, since it uses less digits than its factorization.

1003660073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588 (or 20575 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 1003660073 is about 31680.5945809103. The cubic root of 1003660073 is about 1001.2185388932.

The spelling of 1003660073 in words is "one billion, three million, six hundred sixty thousand, seventy-three".