66049417 has 4 divisors (see below), whose sum is σ = 75485056. Its totient is φ = 56613780.

The previous prime is 66049411. The next prime is 66049421. The reversal of 66049417 is 71494066.

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 66049417 - 2³ = 66049409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66049411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4717809 + ... + 4717822.

It is an arithmetic number, because the mean of its divisors is an integer number (18871264).

Almost surely, 2^66049417 is an apocalyptic number.

It is an amenable number.

66049417 is a deficient number, since it is larger than the sum of its proper divisors (9435639).

66049417 is an equidigital number, since it uses as much as digits as its factorization.

66049417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9435638.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66049417 is about 8127.0792416464. The cubic root of 66049417 is about 404.2248384946.

It can be divided in two parts, 66049 and 417, that added together give a palindrome (66466).

The spelling of 66049417 in words is "sixty-six million, forty-nine thousand, four hundred seventeen".