79966357 has 2 divisors, whose sum is σ = 79966358. Its totient is φ = 79966356.

The previous prime is 79966291. The next prime is 79966387. The reversal of 79966357 is 75366997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48986001 + 30980356 = 6999^2 + 5566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79966357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79966387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39983178 + 39983179.

It is an arithmetic number, because the mean of its divisors is an integer number (39983179).

Almost surely, 2^79966357 is an apocalyptic number.

It is an amenable number.

79966357 is a deficient number, since it is larger than the sum of its proper divisors (1).

79966357 is an equidigital number, since it uses as much as digits as its factorization.

79966357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 52.

The square root of 79966357 is about 8942.3910113571. The cubic root of 79966357 is about 430.8265281655.

The spelling of 79966357 in words is "seventy-nine million, nine hundred sixty-six thousand, three hundred fifty-seven".