66412767 has 8 divisors (see below), whose sum is σ = 88588080. Its totient is φ = 44256320.

The previous prime is 66412741. The next prime is 66412783. The reversal of 66412767 is 76721466.

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 66412767 - 2¹⁰ = 66411743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412267) 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 7 ways as a sum of consecutive naturals, for example, 10717 + ... + 15737.

It is an arithmetic number, because the mean of its divisors is an integer number (11073510).

Almost surely, 2^66412767 is an apocalyptic number.

66412767 is a deficient number, since it is larger than the sum of its proper divisors (22175313).

66412767 is a wasteful number, since it uses less digits than its factorization.

66412767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9433.

The product of its digits is 84672, while the sum is 39.

The square root of 66412767 is about 8149.4028615599. The cubic root of 66412767 is about 404.9647218166.

It can be divided in two parts, 664 and 12767, that added together give a palindrome (13431).

The spelling of 66412767 in words is "sixty-six million, four hundred twelve thousand, seven hundred sixty-seven".