609806040 has 32 divisors (see below), whose sum is σ = 1829418480. Its totient is φ = 162614912.

The previous prime is 609806039. The next prime is 609806111. The reversal of 609806040 is 40608906.

It is a junction number, because it is equal to n+sod(n) for n = 609805992 and 609806010.

It is a congruent number.

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, 2540739 + ... + 2540978.

Almost surely, 2^609806040 is an apocalyptic number.

609806040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609806040 is an abundant number, since it is smaller than the sum of its proper divisors (1219612440).

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

609806040 is a wasteful number, since it uses less digits than its factorization.

609806040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081731 (or 5081727 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 609806040 is about 24694.2511528493. The cubic root of 609806040 is about 848.0027107722.

The spelling of 609806040 in words is "six hundred nine million, eight hundred six thousand, forty".