67974871 has 4 divisors (see below), whose sum is σ = 68171112. Its totient is φ = 67778632.

The previous prime is 67974859. The next prime is 67974887. The reversal of 67974871 is 17847976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67974871 - 2²¹ = 65877719 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67974671) 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, 97600 + ... + 98293.

It is an arithmetic number, because the mean of its divisors is an integer number (17042778).

Almost surely, 2^67974871 is an apocalyptic number.

67974871 is a deficient number, since it is larger than the sum of its proper divisors (196241).

67974871 is a wasteful number, since it uses less digits than its factorization.

67974871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196240.

The product of its digits is 592704, while the sum is 49.

The square root of 67974871 is about 8244.6874410132. The cubic root of 67974871 is about 408.1152256093.

The spelling of 67974871 in words is "sixty-seven million, nine hundred seventy-four thousand, eight hundred seventy-one".