248681997 has 6 divisors (see below), whose sum is σ = 359207342. Its totient is φ = 165787992.

The previous prime is 248681977. The next prime is 248681999. The reversal of 248681997 is 799186842.

248681997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 177262596 + 71419401 = 13314^2 + 8451^2 .

It is not a de Polignac number, because 248681997 - 2⁷ = 248681869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248681999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13815658 + ... + 13815675.

Almost surely, 2^248681997 is an apocalyptic number.

It is an amenable number.

248681997 is a deficient number, since it is larger than the sum of its proper divisors (110525345).

248681997 is a wasteful number, since it uses less digits than its factorization.

248681997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27631339 (or 27631336 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 248681997 is about 15769.6543081959. The cubic root of 248681997 is about 628.8515206144.

The spelling of 248681997 in words is "two hundred forty-eight million, six hundred eighty-one thousand, nine hundred ninety-seven".