71406917 has 2 divisors, whose sum is σ = 71406918. Its totient is φ = 71406916.

The previous prime is 71406911. The next prime is 71406931. The reversal of 71406917 is 71960417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71385601 + 21316 = 8449^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 71406917 - 2²⁰ = 70358341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71406911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35703458 + 35703459.

It is an arithmetic number, because the mean of its divisors is an integer number (35703459).

Almost surely, 2^71406917 is an apocalyptic number.

It is an amenable number.

71406917 is a deficient number, since it is larger than the sum of its proper divisors (1).

71406917 is an equidigital number, since it uses as much as digits as its factorization.

71406917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 71406917 is about 8450.2613569049. The cubic root of 71406917 is about 414.8713338001.

The spelling of 71406917 in words is "seventy-one million, four hundred six thousand, nine hundred seventeen".