517016644 has 9 divisors (see below), whose sum is σ = 904858717. Its totient is φ = 258485584.

The previous prime is 517016641. The next prime is 517016653. The reversal of 517016644 is 446610715.

The square root of 517016644 is 22738.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 297976644 + 219040000 = 17262^2 + 14800^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517016641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 39792 + ... + 51160.

Almost surely, 2^517016644 is an apocalyptic number.

517016644 is the 22738-th square number.

It is an amenable number.

517016644 is a deficient number, since it is larger than the sum of its proper divisors (387842073).

517016644 is an frugal number, since it uses more digits than its factorization.

517016644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22742 (or 11371 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The cubic root of 517016644 is about 802.6043479313.

The spelling of 517016644 in words is "five hundred seventeen million, sixteen thousand, six hundred forty-four".