501665268 has 48 divisors (see below), whose sum is σ = 1278377856. Its totient is φ = 152181120.

The previous prime is 501665267. The next prime is 501665293. The reversal of 501665268 is 862566105.

It is a super-2 number, since 2×501665268² = 503336082235023648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501665267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11571 + ... + 33722.

It is an arithmetic number, because the mean of its divisors is an integer number (26632872).

Almost surely, 2^501665268 is an apocalyptic number.

It is an amenable number.

501665268 is an abundant number, since it is smaller than the sum of its proper divisors (776712588).

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

501665268 is a wasteful number, since it uses less digits than its factorization.

501665268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45384 (or 45382 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 501665268 is about 22397.8853466125. The cubic root of 501665268 is about 794.5806989485.

The spelling of 501665268 in words is "five hundred one million, six hundred sixty-five thousand, two hundred sixty-eight".