71938567 has 2 divisors, whose sum is σ = 71938568. Its totient is φ = 71938566.

The previous prime is 71938553. The next prime is 71938571. The reversal of 71938567 is 76583917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71938567 - 2⁷ = 71938439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71938597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35969283 + 35969284.

It is an arithmetic number, because the mean of its divisors is an integer number (35969284).

Almost surely, 2^71938567 is an apocalyptic number.

71938567 is a deficient number, since it is larger than the sum of its proper divisors (1).

71938567 is an equidigital number, since it uses as much as digits as its factorization.

71938567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 71938567 is about 8481.6606274951. The cubic root of 71938567 is about 415.8984107673.

The spelling of 71938567 in words is "seventy-one million, nine hundred thirty-eight thousand, five hundred sixty-seven".