608880721 has 4 divisors (see below), whose sum is σ = 644697252. Its totient is φ = 573064192.

The previous prime is 608880719. The next prime is 608880749. The reversal of 608880721 is 127088806.

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 238857025 + 370023696 = 15455^2 + 19236^2 .

It is a cyclic number.

It is not a de Polignac number, because 608880721 - 2¹ = 608880719 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (608880221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17908240 + ... + 17908273.

It is an arithmetic number, because the mean of its divisors is an integer number (161174313).

Almost surely, 2^608880721 is an apocalyptic number.

It is an amenable number.

608880721 is a deficient number, since it is larger than the sum of its proper divisors (35816531).

608880721 is a wasteful number, since it uses less digits than its factorization.

608880721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35816530.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 608880721 is about 24675.5085256616. The cubic root of 608880721 is about 847.5735741882.

The spelling of 608880721 in words is "six hundred eight million, eight hundred eighty thousand, seven hundred twenty-one".