609335040 has 144 divisors (see below), whose sum is σ = 1965575808. Its totient is φ = 160862208.

The previous prime is 609335033. The next prime is 609335081. The reversal of 609335040 is 40533906.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 609334989 and 609335007.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 410139 + ... + 411621.

It is an arithmetic number, because the mean of its divisors is an integer number (13649832).

Almost surely, 2^609335040 is an apocalyptic number.

609335040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609335040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982787904).

609335040 is an abundant number, since it is smaller than the sum of its proper divisors (1356240768).

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

609335040 is a wasteful number, since it uses less digits than its factorization.

609335040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 609335040 is about 24684.7126780929. The cubic root of 609335040 is about 847.7843286822.

Adding to 609335040 its reverse (40533906), we get a palindrome (649868946).

The spelling of 609335040 in words is "six hundred nine million, three hundred thirty-five thousand, forty".