609620728 has 16 divisors (see below), whose sum is σ = 1143323280. Its totient is φ = 304734528.

The previous prime is 609620699. The next prime is 609620729. The reversal of 609620728 is 827026906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609620729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39676 + ... + 52852.

It is an arithmetic number, because the mean of its divisors is an integer number (71457705).

Almost surely, 2^609620728 is an apocalyptic number.

It is an amenable number.

609620728 is a deficient number, since it is larger than the sum of its proper divisors (533702552).

609620728 is a wasteful number, since it uses less digits than its factorization.

609620728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18966 (or 18962 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 609620728 is about 24690.4987393937. The cubic root of 609620728 is about 847.9168031290.

The spelling of 609620728 in words is "six hundred nine million, six hundred twenty thousand, seven hundred twenty-eight".