609961104 has 240 divisors, whose sum is σ = 1949875200. Its totient is φ = 183731328.

The previous prime is 609961103. The next prime is 609961181. The reversal of 609961104 is 401169906.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609961103) 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 47 ways as a sum of consecutive naturals, for example, 1698877 + ... + 1699235.

It is an arithmetic number, because the mean of its divisors is an integer number (8124480).

Almost surely, 2^609961104 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 609961104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974937600).

609961104 is an abundant number, since it is smaller than the sum of its proper divisors (1339914096).

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

609961104 is a wasteful number, since it uses less digits than its factorization.

609961104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 609961104 is about 24697.3906314007. The cubic root of 609961104 is about 848.0745825585.

The spelling of 609961104 in words is "six hundred nine million, nine hundred sixty-one thousand, one hundred four".