66413417 has 8 divisors (see below), whose sum is σ = 79896000. Its totient is φ = 53929584.

The previous prime is 66413411. The next prime is 66413419. The reversal of 66413417 is 71431466.

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

It is a cyclic number.

It is not a de Polignac number, because 66413417 - 2⁴ = 66413401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66413411) 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, 249542 + ... + 249807.

It is an arithmetic number, because the mean of its divisors is an integer number (9987000).

Almost surely, 2^66413417 is an apocalyptic number.

It is an amenable number.

66413417 is a deficient number, since it is larger than the sum of its proper divisors (13482583).

66413417 is a wasteful number, since it uses less digits than its factorization.

66413417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499375.

The product of its digits is 12096, while the sum is 32.

The square root of 66413417 is about 8149.4427416849. The cubic root of 66413417 is about 404.9660429793.

The spelling of 66413417 in words is "sixty-six million, four hundred thirteen thousand, four hundred seventeen".