133640603 has 16 divisors (see below), whose sum is σ = 143742720. Its totient is φ = 123941664.

The previous prime is 133640537. The next prime is 133640609. The reversal of 133640603 is 306046331.

It is not a de Polignac number, because 133640603 - 2²⁴ = 116863387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133640609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160793 + ... + 161621.

It is an arithmetic number, because the mean of its divisors is an integer number (8983920).

Almost surely, 2^133640603 is an apocalyptic number.

133640603 is a deficient number, since it is larger than the sum of its proper divisors (10102117).

133640603 is a wasteful number, since it uses less digits than its factorization.

133640603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 133640603 is about 11560.3028939557. The cubic root of 133640603 is about 511.2650932590.

Adding to 133640603 its reverse (306046331), we get a palindrome (439686934).

The spelling of 133640603 in words is "one hundred thirty-three million, six hundred forty thousand, six hundred three".