516403645 has 32 divisors (see below), whose sum is σ = 677445120. Its totient is φ = 376396800.

The previous prime is 516403619. The next prime is 516403649. The reversal of 516403645 is 546304615.

It is not a de Polignac number, because 516403645 - 2¹⁷ = 516272573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516403645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516403649) 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 31 ways as a sum of consecutive naturals, for example, 355170 + ... + 356620.

It is an arithmetic number, because the mean of its divisors is an integer number (21170160).

Almost surely, 2^516403645 is an apocalyptic number.

It is an amenable number.

516403645 is a deficient number, since it is larger than the sum of its proper divisors (161041475).

516403645 is a wasteful number, since it uses less digits than its factorization.

516403645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 516403645 is about 22724.5163864932. The cubic root of 516403645 is about 802.2870207937.

The spelling of 516403645 in words is "five hundred sixteen million, four hundred three thousand, six hundred forty-five".