248720497 has 4 divisors (see below), whose sum is σ = 248787520. Its totient is φ = 248653476.

The previous prime is 248720477. The next prime is 248720561. The reversal of 248720497 is 794027842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248720497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248720477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27597 + ... + 35482.

It is an arithmetic number, because the mean of its divisors is an integer number (62196880).

Almost surely, 2^248720497 is an apocalyptic number.

It is an amenable number.

248720497 is a deficient number, since it is larger than the sum of its proper divisors (67023).

248720497 is an equidigital number, since it uses as much as digits as its factorization.

248720497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67022.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 248720497 is about 15770.8749598746. The cubic root of 248720497 is about 628.8839710726.

The spelling of 248720497 in words is "two hundred forty-eight million, seven hundred twenty thousand, four hundred ninety-seven".