67665674747 has 8 divisors (see below), whose sum is σ = 73819332720. Its totient is φ = 61512388960.

The previous prime is 67665674707. The next prime is 67665674761. The reversal of 67665674747 is 74747656676.

It is a happy number.

67665674747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 67665674747 - 2²⁸ = 67397239291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67665674707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401333 + ... + 544425.

It is an arithmetic number, because the mean of its divisors is an integer number (9227416590).

Almost surely, 2^67665674747 is an apocalyptic number.

67665674747 is a deficient number, since it is larger than the sum of its proper divisors (6153657973).

67665674747 is a wasteful number, since it uses less digits than its factorization.

67665674747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186093.

The product of its digits is 248935680, while the sum is 65.

The spelling of 67665674747 in words is "sixty-seven billion, six hundred sixty-five million, six hundred seventy-four thousand, seven hundred forty-seven".