2609690578 has 16 divisors (see below), whose sum is σ = 4328904096. Its totient is φ = 1169972640.

The previous prime is 2609690543. The next prime is 2609690579. The reversal of 2609690578 is 8750969062.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2609690579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810876 + ... + 814087.

It is an arithmetic number, because the mean of its divisors is an integer number (270556506).

Almost surely, 2^2609690578 is an apocalyptic number.

2609690578 is a deficient number, since it is larger than the sum of its proper divisors (1719213518).

2609690578 is a wasteful number, since it uses less digits than its factorization.

2609690578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625049.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 2609690578 is about 51085.1306937743. The cubic root of 2609690578 is about 1376.7751095492.

The spelling of 2609690578 in words is "two billion, six hundred nine million, six hundred ninety thousand, five hundred seventy-eight".