71710993 has 2 divisors, whose sum is σ = 71710994. Its totient is φ = 71710992.

The previous prime is 71710979. The next prime is 71711011. The reversal of 71710993 is 39901717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 3969 = 8468^2 + 63^2 .

It is a cyclic number.

It is not a de Polignac number, because 71710993 - 2²⁵ = 38156561 is a prime.

It is not a weakly prime, because it can be changed into another prime (71710963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35855496 + 35855497.

It is an arithmetic number, because the mean of its divisors is an integer number (35855497).

Almost surely, 2^71710993 is an apocalyptic number.

It is an amenable number.

71710993 is a deficient number, since it is larger than the sum of its proper divisors (1).

71710993 is an equidigital number, since it uses as much as digits as its factorization.

71710993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 71710993 is about 8468.2343496150. The cubic root of 71710993 is about 415.4593896737.

The spelling of 71710993 in words is "seventy-one million, seven hundred ten thousand, nine hundred ninety-three".