80745667 has 2 divisors, whose sum is σ = 80745668. Its totient is φ = 80745666.

The previous prime is 80745661. The next prime is 80745677. The reversal of 80745667 is 76654708.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80745667 is a prime.

It is not a weakly prime, because it can be changed into another prime (80745661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40372833 + 40372834.

It is an arithmetic number, because the mean of its divisors is an integer number (40372834).

Almost surely, 2^80745667 is an apocalyptic number.

80745667 is a deficient number, since it is larger than the sum of its proper divisors (1).

80745667 is an equidigital number, since it uses as much as digits as its factorization.

80745667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 80745667 is about 8985.8592800021. The cubic root of 80745667 is about 432.2215423885.

The spelling of 80745667 in words is "eighty million, seven hundred forty-five thousand, six hundred sixty-seven".