71942617 has 2 divisors, whose sum is σ = 71942618. Its totient is φ = 71942616.

The previous prime is 71942609. The next prime is 71942621. The reversal of 71942617 is 71624917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69288976 + 2653641 = 8324^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 71942617 - 2³ = 71942609 is a prime.

It is not a weakly prime, because it can be changed into another prime (71946617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35971308 + 35971309.

It is an arithmetic number, because the mean of its divisors is an integer number (35971309).

Almost surely, 2^71942617 is an apocalyptic number.

It is an amenable number.

71942617 is a deficient number, since it is larger than the sum of its proper divisors (1).

71942617 is an equidigital number, since it uses as much as digits as its factorization.

71942617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 71942617 is about 8481.8993745505. The cubic root of 71942617 is about 415.9062153753.

The spelling of 71942617 in words is "seventy-one million, nine hundred forty-two thousand, six hundred seventeen".