849661648 has 20 divisors (see below), whose sum is σ = 1795876128. Its totient is φ = 386209760.

The previous prime is 849661601. The next prime is 849661651. The reversal of 849661648 is 846166948.

It is a junction number, because it is equal to n+sod(n) for n = 849661595 and 849661604.

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, 2413636 + ... + 2413987.

Almost surely, 2^849661648 is an apocalyptic number.

849661648 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

849661648 is an abundant number, since it is smaller than the sum of its proper divisors (946214480).

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

849661648 is a wasteful number, since it uses less digits than its factorization.

849661648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827642 (or 4827636 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 849661648 is about 29148.9562077272. The cubic root of 849661648 is about 947.1425302684.

The spelling of 849661648 in words is "eight hundred forty-nine million, six hundred sixty-one thousand, six hundred forty-eight".