67388971 has 8 divisors (see below), whose sum is σ = 72694944. Its totient is φ = 62100480.

The previous prime is 67388963. The next prime is 67388989. The reversal of 67388971 is 17988376.

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

It is not a de Polignac number, because 67388971 - 2³ = 67388963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67388071) 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, 4290 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (9086868).

Almost surely, 2^67388971 is an apocalyptic number.

67388971 is a deficient number, since it is larger than the sum of its proper divisors (5305973).

67388971 is a wasteful number, since it uses less digits than its factorization.

67388971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741.

The product of its digits is 508032, while the sum is 49.

The square root of 67388971 is about 8209.0785719227. The cubic root of 67388971 is about 406.9392762164.

The spelling of 67388971 in words is "sixty-seven million, three hundred eighty-eight thousand, nine hundred seventy-one".