248397621 has 8 divisors (see below), whose sum is σ = 348628320. Its totient is φ = 156882672.

The previous prime is 248397607. The next prime is 248397629. The reversal of 248397621 is 126793842.

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

It is not a de Polignac number, because 248397621 - 2⁹ = 248397109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248397629) 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, 2178870 + ... + 2178983.

It is an arithmetic number, because the mean of its divisors is an integer number (43578540).

Almost surely, 2^248397621 is an apocalyptic number.

It is an amenable number.

248397621 is a deficient number, since it is larger than the sum of its proper divisors (100230699).

248397621 is a wasteful number, since it uses less digits than its factorization.

248397621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357875.

The product of its digits is 145152, while the sum is 42.

The square root of 248397621 is about 15760.6351712106. The cubic root of 248397621 is about 628.6117250903.

The spelling of 248397621 in words is "two hundred forty-eight million, three hundred ninety-seven thousand, six hundred twenty-one".