501697968 has 80 divisors (see below), whose sum is σ = 1317519840. Its totient is φ = 164487168.

The previous prime is 501697967. The next prime is 501697969. The reversal of 501697968 is 869796105.

It is an interprime number because it is at equal distance from previous prime (501697967) and next prime (501697969).

It is a self number, because there is not a number n which added to its sum of digits gives 501697968.

It is not an unprimeable number, because it can be changed into a prime (501697961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1289518 + ... + 1289906.

It is an arithmetic number, because the mean of its divisors is an integer number (16468998).

Almost surely, 2^501697968 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 501697968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658759920).

501697968 is an abundant number, since it is smaller than the sum of its proper divisors (815821872).

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

501697968 is a wasteful number, since it uses less digits than its factorization.

501697968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 501697968 is about 22398.6153143448. The cubic root of 501697968 is about 794.5979629331.

The spelling of 501697968 in words is "five hundred one million, six hundred ninety-seven thousand, nine hundred sixty-eight".