609649888 has 48 divisors (see below), whose sum is σ = 1238751360. Its totient is φ = 295128576.

The previous prime is 609649883. The next prime is 609649897. The reversal of 609649888 is 888946906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609649883) 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 7 ways as a sum of consecutive naturals, for example, 262878 + ... + 265186.

It is an arithmetic number, because the mean of its divisors is an integer number (25807320).

Almost surely, 2^609649888 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 609649888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619375680).

609649888 is an abundant number, since it is smaller than the sum of its proper divisors (629101472).

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

609649888 is a wasteful number, since it uses less digits than its factorization.

609649888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The square root of 609649888 is about 24691.0892428827. The cubic root of 609649888 is about 847.9303223870.

The spelling of 609649888 in words is "six hundred nine million, six hundred forty-nine thousand, eight hundred eighty-eight".