503989668 has 192 divisors, whose sum is σ = 1693440000. Its totient is φ = 125877888.

The previous prime is 503989657. The next prime is 503989679. The reversal of 503989668 is 866989305.

It is an interprime number because it is at equal distance from previous prime (503989657) and next prime (503989679).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 185383 + ... + 188081.

It is an arithmetic number, because the mean of its divisors is an integer number (8820000).

Almost surely, 2^503989668 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 503989668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846720000).

503989668 is an abundant number, since it is smaller than the sum of its proper divisors (1189450332).

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

503989668 is a wasteful number, since it uses less digits than its factorization.

503989668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 503989668 is about 22449.7142075350. The cubic root of 503989668 is about 795.8060034973.

The spelling of 503989668 in words is "five hundred three million, nine hundred eighty-nine thousand, six hundred sixty-eight".