71070641 has 2 divisors, whose sum is σ = 71070642. Its totient is φ = 71070640.

The previous prime is 71070613. The next prime is 71070679. The reversal of 71070641 is 14607017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 32444416 = 6215^2 + 5696^2 .

It is a cyclic number.

It is not a de Polignac number, because 71070641 - 2¹⁰ = 71069617 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71070641.

It is not a weakly prime, because it can be changed into another prime (71070341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35535320 + 35535321.

It is an arithmetic number, because the mean of its divisors is an integer number (35535321).

Almost surely, 2^71070641 is an apocalyptic number.

It is an amenable number.

71070641 is a deficient number, since it is larger than the sum of its proper divisors (1).

71070641 is an equidigital number, since it uses as much as digits as its factorization.

71070641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 71070641 is about 8430.3405032063. The cubic root of 71070641 is about 414.2190587683.

Adding to 71070641 its reverse (14607017), we get a palindrome (85677658).

The spelling of 71070641 in words is "seventy-one million, seventy thousand, six hundred forty-one".