66662435605 has 8 divisors (see below), whose sum is σ = 80003008512. Its totient is φ = 53324557968.

The previous prime is 66662435573. The next prime is 66662435611. The reversal of 66662435605 is 50653426666.

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 66662435605 - 2⁵ = 66662435573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618997 + ... + 718666.

It is an arithmetic number, because the mean of its divisors is an integer number (10000376064).

Almost surely, 2^66662435605 is an apocalyptic number.

It is an amenable number.

66662435605 is a deficient number, since it is larger than the sum of its proper divisors (13340572907).

66662435605 is a wasteful number, since it uses less digits than its factorization.

66662435605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347635.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 66662435605 in words is "sixty-six billion, six hundred sixty-two million, four hundred thirty-five thousand, six hundred five".