80727877 has 2 divisors, whose sum is σ = 80727878. Its totient is φ = 80727876.

The previous prime is 80727863. The next prime is 80727943. The reversal of 80727877 is 77872708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58155876 + 22572001 = 7626^2 + 4751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80727877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80727077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40363938 + 40363939.

It is an arithmetic number, because the mean of its divisors is an integer number (40363939).

Almost surely, 2^80727877 is an apocalyptic number.

It is an amenable number.

80727877 is a deficient number, since it is larger than the sum of its proper divisors (1).

80727877 is an equidigital number, since it uses as much as digits as its factorization.

80727877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 307328, while the sum is 46.

The square root of 80727877 is about 8984.8693368351. The cubic root of 80727877 is about 432.1897975024.

The spelling of 80727877 in words is "eighty million, seven hundred twenty-seven thousand, eight hundred seventy-seven".