79166771 has 2 divisors, whose sum is σ = 79166772. Its totient is φ = 79166770.

The previous prime is 79166767. The next prime is 79166797. The reversal of 79166771 is 17766197.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79166771 - 2² = 79166767 is a prime.

It is not a weakly prime, because it can be changed into another prime (79163771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39583385 + 39583386.

It is an arithmetic number, because the mean of its divisors is an integer number (39583386).

Almost surely, 2^79166771 is an apocalyptic number.

79166771 is a deficient number, since it is larger than the sum of its proper divisors (1).

79166771 is an equidigital number, since it uses as much as digits as its factorization.

79166771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 44.

The square root of 79166771 is about 8897.5710730513. The cubic root of 79166771 is about 429.3857662458.

The spelling of 79166771 in words is "seventy-nine million, one hundred sixty-six thousand, seven hundred seventy-one".