71693693 has 2 divisors, whose sum is σ = 71693694. Its totient is φ = 71693692.

The previous prime is 71693681. The next prime is 71693701. The reversal of 71693693 is 39639617.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67190809 + 4502884 = 8197^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 71693693 - 2²⁰ = 70645117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71693603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35846846 + 35846847.

It is an arithmetic number, because the mean of its divisors is an integer number (35846847).

Almost surely, 2^71693693 is an apocalyptic number.

It is an amenable number.

71693693 is a deficient number, since it is larger than the sum of its proper divisors (1).

71693693 is an equidigital number, since it uses as much as digits as its factorization.

71693693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 44.

The square root of 71693693 is about 8467.2128235920. The cubic root of 71693693 is about 415.4259776625.

The spelling of 71693693 in words is "seventy-one million, six hundred ninety-three thousand, six hundred ninety-three".