668853024 has 192 divisors, whose sum is σ = 2098962432. Its totient is φ = 182476800.

The previous prime is 668853023. The next prime is 668853047. The reversal of 668853024 is 420358866.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (668853023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2020539 + ... + 2020869.

It is an arithmetic number, because the mean of its divisors is an integer number (10932096).

Almost surely, 2^668853024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668853024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049481216).

668853024 is an abundant number, since it is smaller than the sum of its proper divisors (1430109408).

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

668853024 is a wasteful number, since it uses less digits than its factorization.

668853024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 668853024 is about 25862.1929464614. The cubic root of 668853024 is about 874.5344021986.

The spelling of 668853024 in words is "six hundred sixty-eight million, eight hundred fifty-three thousand, twenty-four".