80205679 has 2 divisors, whose sum is σ = 80205680. Its totient is φ = 80205678.

The previous prime is 80205673. The next prime is 80205731. The reversal of 80205679 is 97650208.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80205679 - 2⁷ = 80205551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80205673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40102839 + 40102840.

It is an arithmetic number, because the mean of its divisors is an integer number (40102840).

Almost surely, 2^80205679 is an apocalyptic number.

80205679 is a deficient number, since it is larger than the sum of its proper divisors (1).

80205679 is an equidigital number, since it uses as much as digits as its factorization.

80205679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 80205679 is about 8955.7623349439. The cubic root of 80205679 is about 431.2558903067.

The spelling of 80205679 in words is "eighty million, two hundred five thousand, six hundred seventy-nine".