133704513 has 10 divisors (see below), whose sum is σ = 199731554. Its totient is φ = 89136288.

The previous prime is 133704511. The next prime is 133704533. The reversal of 133704513 is 315407331.

It can be written as a sum of positive squares in only one way, i.e., 130233744 + 3470769 = 11412^2 + 1863^2 .

It is not a de Polignac number, because 133704513 - 2¹ = 133704511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133704511) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 825256 + ... + 825417.

Almost surely, 2^133704513 is an apocalyptic number.

It is an amenable number.

133704513 is a deficient number, since it is larger than the sum of its proper divisors (66027041).

133704513 is an equidigital number, since it uses as much as digits as its factorization.

133704513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650685 (or 1650676 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 133704513 is about 11563.0667644877. The cubic root of 133704513 is about 511.3465798335.

The spelling of 133704513 in words is "one hundred thirty-three million, seven hundred four thousand, five hundred thirteen".