66452413 has 4 divisors (see below), whose sum is σ = 66471328. Its totient is φ = 66433500.

The previous prime is 66452401. The next prime is 66452417. The reversal of 66452413 is 31425466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66452413 - 2⁹ = 66451901 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 (66452417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2463 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (16617832).

Almost surely, 2^66452413 is an apocalyptic number.

It is an amenable number.

66452413 is a deficient number, since it is larger than the sum of its proper divisors (18915).

66452413 is a wasteful number, since it uses less digits than its factorization.

66452413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18914.

The product of its digits is 17280, while the sum is 31.

The square root of 66452413 is about 8151.8349468080. The cubic root of 66452413 is about 405.0452888439.

Adding to 66452413 its reverse (31425466), we get a palindrome (97877879).

The spelling of 66452413 in words is "sixty-six million, four hundred fifty-two thousand, four hundred thirteen".