680875529 has 4 divisors (see below), whose sum is σ = 681039876. Its totient is φ = 680711184.

The previous prime is 680875523. The next prime is 680875549. The reversal of 680875529 is 925578086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31899904 + 648975625 = 5648^2 + 25475^2 .

It is a cyclic number.

It is not a de Polignac number, because 680875529 - 2²⁴ = 664098313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680875523) 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, 75794 + ... + 84299.

It is an arithmetic number, because the mean of its divisors is an integer number (170259969).

Almost surely, 2^680875529 is an apocalyptic number.

It is an amenable number.

680875529 is a deficient number, since it is larger than the sum of its proper divisors (164347).

680875529 is a wasteful number, since it uses less digits than its factorization.

680875529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164346.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 680875529 is about 26093.5917228733. The cubic root of 680875529 is about 879.7431796192.

The spelling of 680875529 in words is "six hundred eighty million, eight hundred seventy-five thousand, five hundred twenty-nine".