80679787 has 2 divisors, whose sum is σ = 80679788. Its totient is φ = 80679786.

The previous prime is 80679751. The next prime is 80679899. The reversal of 80679787 is 78797608.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80679787 - 2¹⁹ = 80155499 is a prime.

It is not a weakly prime, because it can be changed into another prime (80670787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40339893 + 40339894.

It is an arithmetic number, because the mean of its divisors is an integer number (40339894).

Almost surely, 2^80679787 is an apocalyptic number.

80679787 is a deficient number, since it is larger than the sum of its proper divisors (1).

80679787 is an equidigital number, since it uses as much as digits as its factorization.

80679787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 80679787 is about 8982.1927723691. The cubic root of 80679787 is about 432.1039612479.

The spelling of 80679787 in words is "eighty million, six hundred seventy-nine thousand, seven hundred eighty-seven".