71621167 has 2 divisors, whose sum is σ = 71621168. Its totient is φ = 71621166.

The previous prime is 71621161. The next prime is 71621177. The reversal of 71621167 is 76112617.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71621167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71621161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35810583 + 35810584.

It is an arithmetic number, because the mean of its divisors is an integer number (35810584).

Almost surely, 2^71621167 is an apocalyptic number.

71621167 is a deficient number, since it is larger than the sum of its proper divisors (1).

71621167 is an equidigital number, since it uses as much as digits as its factorization.

71621167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 71621167 is about 8462.9289846955. The cubic root of 71621167 is about 415.2858474848.

The spelling of 71621167 in words is "seventy-one million, six hundred twenty-one thousand, one hundred sixty-seven".