609864892 has 54 divisors (see below), whose sum is σ = 1324461768. Its totient is φ = 240593184.

The previous prime is 609864889. The next prime is 609864901. The reversal of 609864892 is 298468906.

609864892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1698609 + ... + 1698967.

Almost surely, 2^609864892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609864892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662230884).

609864892 is an abundant number, since it is smaller than the sum of its proper divisors (714596876).

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

609864892 is a wasteful number, since it uses less digits than its factorization.

609864892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 609864892 is about 24695.4427374769. The cubic root of 609864892 is about 848.0299899652.

The spelling of 609864892 in words is "six hundred nine million, eight hundred sixty-four thousand, eight hundred ninety-two".