517166740 has 12 divisors (see below), whose sum is σ = 1086050196. Its totient is φ = 206866688.

The previous prime is 517166737. The next prime is 517166747. The reversal of 517166740 is 47661715.

It can be written as a sum of positive squares in 2 ways, for example, as 321054724 + 196112016 = 17918^2 + 14004^2 .

It is a super-2 number, since 2×517166740² = 534922873924455200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 517166740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517166747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12929149 + ... + 12929188.

It is an arithmetic number, because the mean of its divisors is an integer number (90504183).

Almost surely, 2^517166740 is an apocalyptic number.

It is an amenable number.

517166740 is an abundant number, since it is smaller than the sum of its proper divisors (568883456).

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

517166740 is a wasteful number, since it uses less digits than its factorization.

517166740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25858346 (or 25858344 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 517166740 is about 22741.3003146258. The cubic root of 517166740 is about 802.6820089040.

The spelling of 517166740 in words is "five hundred seventeen million, one hundred sixty-six thousand, seven hundred forty".