609058640 has 20 divisors (see below), whose sum is σ = 1416061524. Its totient is φ = 243623424.

The previous prime is 609058631. The next prime is 609058687. The reversal of 609058640 is 46850906.

609058640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 210018064 + 399040576 = 14492^2 + 19976^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 609058594 and 609058603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3806537 + ... + 3806696.

Almost surely, 2^609058640 is an apocalyptic number.

It is an amenable number.

609058640 is an abundant number, since it is smaller than the sum of its proper divisors (807002884).

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

609058640 is a wasteful number, since it uses less digits than its factorization.

609058640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7613246 (or 7613240 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 609058640 is about 24679.1134362643. The cubic root of 609058640 is about 847.6561216954.

The spelling of 609058640 in words is "six hundred nine million, fifty-eight thousand, six hundred forty".