609795828 has 18 divisors (see below), whose sum is σ = 1541428434. Its totient is φ = 203265264.

The previous prime is 609795827. The next prime is 609795839. The reversal of 609795828 is 828597906.

It is a happy number.

609795828 is a `hidden beast` number, since 609 + 7 + 9 + 5 + 8 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 468376164 + 141419664 = 21642^2 + 11892^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609795827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8469351 + ... + 8469422.

It is an arithmetic number, because the mean of its divisors is an integer number (85634913).

Almost surely, 2^609795828 is an apocalyptic number.

It is an amenable number.

609795828 is an abundant number, since it is smaller than the sum of its proper divisors (931632606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609795828 is a wasteful number, since it uses less digits than its factorization.

609795828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938783 (or 16938778 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 609795828 is about 24694.0443832111. The cubic root of 609795828 is about 847.9979771074.

The spelling of 609795828 in words is "six hundred nine million, seven hundred ninety-five thousand, eight hundred twenty-eight".