2748865646 has 4 divisors (see below), whose sum is σ = 4123298472. Its totient is φ = 1374432822.

The previous prime is 2748865633. The next prime is 2748865699. The reversal of 2748865646 is 6465688472.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2748865591 and 2748865600.

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 as a sum of consecutive naturals, namely, 687216410 + ... + 687216413.

It is an arithmetic number, because the mean of its divisors is an integer number (1030824618).

Almost surely, 2^2748865646 is an apocalyptic number.

2748865646 is a deficient number, since it is larger than the sum of its proper divisors (1374432826).

2748865646 is a wasteful number, since it uses less digits than its factorization.

2748865646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374432825.

The product of its digits is 15482880, while the sum is 56.

The square root of 2748865646 is about 52429.6256519155. The cubic root of 2748865646 is about 1400.8270021968.

The spelling of 2748865646 in words is "two billion, seven hundred forty-eight million, eight hundred sixty-five thousand, six hundred forty-six".