67974647 has 8 divisors (see below), whose sum is σ = 77056560. Its totient is φ = 59443200.

The previous prime is 67974617. The next prime is 67974671. The reversal of 67974647 is 74647976.

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 67974647 - 2⁶ = 67974583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67974595 and 67974604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67974617) 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, 137354 + ... + 137847.

It is an arithmetic number, because the mean of its divisors is an integer number (9632070).

Almost surely, 2^67974647 is an apocalyptic number.

67974647 is a deficient number, since it is larger than the sum of its proper divisors (9081913).

67974647 is a wasteful number, since it uses less digits than its factorization.

67974647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275233.

The product of its digits is 1778112, while the sum is 50.

The square root of 67974647 is about 8244.6738564967. The cubic root of 67974647 is about 408.1147773167.

The spelling of 67974647 in words is "sixty-seven million, nine hundred seventy-four thousand, six hundred forty-seven".