66386762 has 8 divisors (see below), whose sum is σ = 107240196. Its totient is φ = 30640032.

The previous prime is 66386743. The next prime is 66386767. The reversal of 66386762 is 26768366.

It can be written as a sum of positive squares in 2 ways, for example, as 52983841 + 13402921 = 7279^2 + 3661^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66386767) 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, 1276643 + ... + 1276694.

Almost surely, 2^66386762 is an apocalyptic number.

66386762 is a deficient number, since it is larger than the sum of its proper divisors (40853434).

66386762 is a wasteful number, since it uses less digits than its factorization.

66386762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553352.

The product of its digits is 435456, while the sum is 44.

The square root of 66386762 is about 8147.8071896677. The cubic root of 66386762 is about 404.9118580732.

The spelling of 66386762 in words is "sixty-six million, three hundred eighty-six thousand, seven hundred sixty-two".