248640668 has 6 divisors (see below), whose sum is σ = 435121176. Its totient is φ = 124320332.

The previous prime is 248640659. The next prime is 248640673. The reversal of 248640668 is 866046842.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31080080 + ... + 31080087.

It is an arithmetic number, because the mean of its divisors is an integer number (72520196).

Almost surely, 2^248640668 is an apocalyptic number.

It is an amenable number.

248640668 is a deficient number, since it is larger than the sum of its proper divisors (186480508).

248640668 is a wasteful number, since it uses less digits than its factorization.

248640668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62160171 (or 62160169 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The square root of 248640668 is about 15768.3438572350. The cubic root of 248640668 is about 628.8166819520.

The spelling of 248640668 in words is "two hundred forty-eight million, six hundred forty thousand, six hundred sixty-eight".