79800671 has 2 divisors, whose sum is σ = 79800672. Its totient is φ = 79800670.

The previous prime is 79800661. The next prime is 79800673. The reversal of 79800671 is 17600897.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79800671 - 2¹⁸ = 79538527 is a prime.

Together with 79800673, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4658474 and since 79800671 and 4658474 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79800673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39900335 + 39900336.

It is an arithmetic number, because the mean of its divisors is an integer number (39900336).

Almost surely, 2^79800671 is an apocalyptic number.

79800671 is a deficient number, since it is larger than the sum of its proper divisors (1).

79800671 is an equidigital number, since it uses as much as digits as its factorization.

79800671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 79800671 is about 8933.1221305879. The cubic root of 79800671 is about 430.5287726114.

The spelling of 79800671 in words is "seventy-nine million, eight hundred thousand, six hundred seventy-one".