66869662 has 8 divisors (see below), whose sum is σ = 100420992. Its totient is φ = 33396000.

The previous prime is 66869659. The next prime is 66869669. The reversal of 66869662 is 26696866.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66869669) 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, 17214 + ... + 20737.

It is an arithmetic number, because the mean of its divisors is an integer number (12552624).

Almost surely, 2^66869662 is an apocalyptic number.

66869662 is a deficient number, since it is larger than the sum of its proper divisors (33551330).

66869662 is a wasteful number, since it uses less digits than its factorization.

66869662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38834.

The product of its digits is 1119744, while the sum is 49.

The square root of 66869662 is about 8177.3872355417. The cubic root of 66869662 is about 405.8912689007.

The spelling of 66869662 in words is "sixty-six million, eight hundred sixty-nine thousand, six hundred sixty-two".