71694401 has 2 divisors, whose sum is σ = 71694402. Its totient is φ = 71694400.

The previous prime is 71694397. The next prime is 71694431. The reversal of 71694401 is 10449617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67634176 + 4060225 = 8224^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 71694401 - 2² = 71694397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71694431) 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, 35847200 + 35847201.

It is an arithmetic number, because the mean of its divisors is an integer number (35847201).

Almost surely, 2^71694401 is an apocalyptic number.

It is an amenable number.

71694401 is a deficient number, since it is larger than the sum of its proper divisors (1).

71694401 is an equidigital number, since it uses as much as digits as its factorization.

71694401 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 71694401 is about 8467.2546318154. The cubic root of 71694401 is about 415.4273451497.

The spelling of 71694401 in words is "seventy-one million, six hundred ninety-four thousand, four hundred one".