2065720678 has 8 divisors (see below), whose sum is σ = 3541235472. Its totient is φ = 885308856.

The previous prime is 2065720667. The next prime is 2065720687. The reversal of 2065720678 is 8760275602.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 73775725 + ... + 73775752.

It is an arithmetic number, because the mean of its divisors is an integer number (442654434).

Almost surely, 2^2065720678 is an apocalyptic number.

2065720678 is a deficient number, since it is larger than the sum of its proper divisors (1475514794).

2065720678 is a wasteful number, since it uses less digits than its factorization.

2065720678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147551486.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 2065720678 is about 45450.1999775579. The cubic root of 2065720678 is about 1273.5730652640.

The spelling of 2065720678 in words is "two billion, sixty-five million, seven hundred twenty thousand, six hundred seventy-eight".