2646642646 has 8 divisors (see below), whose sum is σ = 4007066760. Its totient is φ = 1310953728.

The previous prime is 2646642611. The next prime is 2646642659. The reversal of 2646642646 is 6462466462.

It is a happy number.

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

It is a super-3 number, since 3×2646642646³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2646642596 and 2646642605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6183531 + ... + 6183958.

It is an arithmetic number, because the mean of its divisors is an integer number (500883345).

Almost surely, 2^2646642646 is an apocalyptic number.

2646642646 is a deficient number, since it is larger than the sum of its proper divisors (1360424114).

2646642646 is a wasteful number, since it uses less digits than its factorization.

2646642646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12367598.

The product of its digits is 1990656, while the sum is 46.

The square root of 2646642646 is about 51445.5308651782. The cubic root of 2646642646 is about 1383.2428543070.

The spelling of 2646642646 in words is "two billion, six hundred forty-six million, six hundred forty-two thousand, six hundred forty-six".