67664417701 has 4 divisors (see below), whose sum is σ = 68079536992. Its totient is φ = 67249298412.

The previous prime is 67664417699. The next prime is 67664417713. The reversal of 67664417701 is 10771446676.

67664417701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67664417701 - 2¹ = 67664417699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67664417771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207559401 + ... + 207559726.

It is an arithmetic number, because the mean of its divisors is an integer number (17019884248).

Almost surely, 2^67664417701 is an apocalyptic number.

It is an amenable number.

67664417701 is a deficient number, since it is larger than the sum of its proper divisors (415119291).

67664417701 is a wasteful number, since it uses less digits than its factorization.

67664417701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415119290.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 67664417701 in words is "sixty-seven billion, six hundred sixty-four million, four hundred seventeen thousand, seven hundred one".