71064491 has 2 divisors, whose sum is σ = 71064492. Its totient is φ = 71064490.

The previous prime is 71064479. The next prime is 71064547. The reversal of 71064491 is 19446017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71064491 - 2¹⁰ = 71063467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71064391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35532245 + 35532246.

It is an arithmetic number, because the mean of its divisors is an integer number (35532246).

Almost surely, 2^71064491 is an apocalyptic number.

71064491 is a deficient number, since it is larger than the sum of its proper divisors (1).

71064491 is an equidigital number, since it uses as much as digits as its factorization.

71064491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71064491 is about 8429.9757413649. The cubic root of 71064491 is about 414.2071104651.

The spelling of 71064491 in words is "seventy-one million, sixty-four thousand, four hundred ninety-one".