248681977 has 2 divisors, whose sum is σ = 248681978. Its totient is φ = 248681976.

The previous prime is 248681971. The next prime is 248681999. The reversal of 248681977 is 779186842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143496441 + 105185536 = 11979^2 + 10256^2 .

It is a cyclic number.

It is not a de Polignac number, because 248681977 - 2¹⁵ = 248649209 is a prime.

It is not a weakly prime, because it can be changed into another prime (248681971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124340988 + 124340989.

It is an arithmetic number, because the mean of its divisors is an integer number (124340989).

Almost surely, 2^248681977 is an apocalyptic number.

It is an amenable number.

248681977 is a deficient number, since it is larger than the sum of its proper divisors (1).

248681977 is an equidigital number, since it uses as much as digits as its factorization.

248681977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 248681977 is about 15769.6536740665. The cubic root of 248681977 is about 628.8515037562.

The spelling of 248681977 in words is "two hundred forty-eight million, six hundred eighty-one thousand, nine hundred seventy-seven".