248649 has 4 divisors (see below), whose sum is σ = 331536. Its totient is φ = 165764.

The previous prime is 248641. The next prime is 248657. The reversal of 248649 is 946842.

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 an interprime number because it is at equal distance from previous prime (248641) and next prime (248657).

It is a cyclic number.

It is not a de Polignac number, because 248649 - 2³ = 248641 is a prime.

It is a D-number.

248649 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (248641) 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, 41439 + ... + 41444.

It is an arithmetic number, because the mean of its divisors is an integer number (82884).

2²⁴⁸⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

248649 is a deficient number, since it is larger than the sum of its proper divisors (82887).

248649 is an equidigital number, since it uses as much as digits as its factorization.

248649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82886.

The product of its digits is 13824, while the sum is 33.

The square root of 248649 is about 498.6471698506. The cubic root of 248649 is about 62.8823705799.

The spelling of 248649 in words is "two hundred forty-eight thousand, six hundred forty-nine".