609104640 has 72 divisors (see below), whose sum is σ = 1945340208. Its totient is φ = 162426880.

The previous prime is 609104623. The next prime is 609104689. The reversal of 609104640 is 46401906.

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 = 609104598 and 609104607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75471 + ... + 83150.

It is an arithmetic number, because the mean of its divisors is an integer number (27018614).

Almost surely, 2^609104640 is an apocalyptic number.

609104640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609104640 is an abundant number, since it is smaller than the sum of its proper divisors (1336235568).

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

609104640 is a wasteful number, since it uses less digits than its factorization.

609104640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158645 (or 158631 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 609104640 is about 24680.0453808335. The cubic root of 609104640 is about 847.6774612936.

The spelling of 609104640 in words is "six hundred nine million, one hundred four thousand, six hundred forty".