80616971 has 2 divisors, whose sum is σ = 80616972. Its totient is φ = 80616970.

The previous prime is 80616923. The next prime is 80616989. The reversal of 80616971 is 17961608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80616971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80616901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40308485 + 40308486.

It is an arithmetic number, because the mean of its divisors is an integer number (40308486).

Almost surely, 2^80616971 is an apocalyptic number.

80616971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80616971 is an equidigital number, since it uses as much as digits as its factorization.

80616971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 80616971 is about 8978.6953952119. The cubic root of 80616971 is about 431.9917890386.

The spelling of 80616971 in words is "eighty million, six hundred sixteen thousand, nine hundred seventy-one".