609042720 has 384 divisors, whose sum is σ = 2377589760. Its totient is φ = 128839680.

The previous prime is 609042719. The next prime is 609042751. The reversal of 609042720 is 27240906.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1303927 + ... + 1304393.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^609042720 is an apocalyptic number.

609042720 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 609042720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188794880).

609042720 is an abundant number, since it is smaller than the sum of its proper divisors (1768547040).

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

609042720 is a wasteful number, since it uses less digits than its factorization.

609042720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 609042720 is about 24678.7908942071. The cubic root of 609042720 is about 847.6487360885.

The spelling of 609042720 in words is "six hundred nine million, forty-two thousand, seven hundred twenty".