248720077 has 2 divisors, whose sum is σ = 248720078. Its totient is φ = 248720076.

The previous prime is 248720033. The next prime is 248720083. The reversal of 248720077 is 770027842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174398436 + 74321641 = 13206^2 + 8621^2 .

It is a cyclic number.

It is not a de Polignac number, because 248720077 - 2¹⁹ = 248195789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248720377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124360038 + 124360039.

It is an arithmetic number, because the mean of its divisors is an integer number (124360039).

Almost surely, 2^248720077 is an apocalyptic number.

It is an amenable number.

248720077 is a deficient number, since it is larger than the sum of its proper divisors (1).

248720077 is an equidigital number, since it uses as much as digits as its factorization.

248720077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 248720077 is about 15770.8616441842. The cubic root of 248720077 is about 628.8836170857.

The spelling of 248720077 in words is "two hundred forty-eight million, seven hundred twenty thousand, seventy-seven".