248898721 has 8 divisors (see below), whose sum is σ = 257128704. Its totient is φ = 240681360.

The previous prime is 248898707. The next prime is 248898731. The reversal of 248898721 is 127898842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248898721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248898731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53151 + ... + 57643.

It is an arithmetic number, because the mean of its divisors is an integer number (32141088).

Almost surely, 2^248898721 is an apocalyptic number.

It is an amenable number.

248898721 is a deficient number, since it is larger than the sum of its proper divisors (8229983).

248898721 is a wasteful number, since it uses less digits than its factorization.

248898721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311.

The product of its digits is 516096, while the sum is 49.

The square root of 248898721 is about 15776.5243637501. The cubic root of 248898721 is about 629.0341469495.

The spelling of 248898721 in words is "two hundred forty-eight million, eight hundred ninety-eight thousand, seven hundred twenty-one".