71670371 has 2 divisors, whose sum is σ = 71670372. Its totient is φ = 71670370.

The previous prime is 71670349. The next prime is 71670409. The reversal of 71670371 is 17307617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71670371 - 2²⁶ = 4561507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71670331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35835185 + 35835186.

It is an arithmetic number, because the mean of its divisors is an integer number (35835186).

Almost surely, 2^71670371 is an apocalyptic number.

71670371 is a deficient number, since it is larger than the sum of its proper divisors (1).

71670371 is an equidigital number, since it uses as much as digits as its factorization.

71670371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 71670371 is about 8465.8355169469. The cubic root of 71670371 is about 415.3809266731.

Adding to 71670371 its reverse (17307617), we get a palindrome (88977988).

The spelling of 71670371 in words is "seventy-one million, six hundred seventy thousand, three hundred seventy-one".