80722867 has 2 divisors, whose sum is σ = 80722868. Its totient is φ = 80722866.

The previous prime is 80722843. The next prime is 80722871. The reversal of 80722867 is 76822708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80722867 - 2²³ = 72334259 is a prime.

It is not a weakly prime, because it can be changed into another prime (80722067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40361433 + 40361434.

It is an arithmetic number, because the mean of its divisors is an integer number (40361434).

Almost surely, 2^80722867 is an apocalyptic number.

80722867 is a deficient number, since it is larger than the sum of its proper divisors (1).

80722867 is an equidigital number, since it uses as much as digits as its factorization.

80722867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 80722867 is about 8984.5905304582. The cubic root of 80722867 is about 432.1808567012.

The spelling of 80722867 in words is "eighty million, seven hundred twenty-two thousand, eight hundred sixty-seven".