66003413 has 8 divisors (see below), whose sum is σ = 76100928. Its totient is φ = 56073024.

The previous prime is 66003389. The next prime is 66003419. The reversal of 66003413 is 31430066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66003413 - 2⁶ = 66003349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66003419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40931 + ... + 42512.

It is an arithmetic number, because the mean of its divisors is an integer number (9512616).

Almost surely, 2^66003413 is an apocalyptic number.

It is an amenable number.

66003413 is a deficient number, since it is larger than the sum of its proper divisors (10097515).

66003413 is a wasteful number, since it uses less digits than its factorization.

66003413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83563.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 66003413 is about 8124.2484575498. The cubic root of 66003413 is about 404.1309679786.

Adding to 66003413 its reverse (31430066), we get a palindrome (97433479).

The spelling of 66003413 in words is "sixty-six million, three thousand, four hundred thirteen".