668380548 has 24 divisors (see below), whose sum is σ = 1701332640. Its totient is φ = 202539520.

The previous prime is 668380547. The next prime is 668380549. The reversal of 668380548 is 845083866.

It is an interprime number because it is at equal distance from previous prime (668380547) and next prime (668380549).

It is a junction number, because it is equal to n+sod(n) for n = 668380497 and 668380506.

It is not an unprimeable number, because it can be changed into a prime (668380541) 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, 2531613 + ... + 2531876.

It is an arithmetic number, because the mean of its divisors is an integer number (70888860).

Almost surely, 2^668380548 is an apocalyptic number.

It is an amenable number.

668380548 is an abundant number, since it is smaller than the sum of its proper divisors (1032952092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668380548 is a wasteful number, since it uses less digits than its factorization.

668380548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063507 (or 5063505 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 668380548 is about 25853.0568405363. The cubic root of 668380548 is about 874.3284307653.

The spelling of 668380548 in words is "six hundred sixty-eight million, three hundred eighty thousand, five hundred forty-eight".