649033847 has 8 divisors (see below), whose sum is σ = 809185152. Its totient is φ = 505740600.

The previous prime is 649033841. The next prime is 649033883. The reversal of 649033847 is 748330946.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 649033847 - 2⁶ = 649033783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649033798 and 649033807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649033841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4214429 + ... + 4214582.

It is an arithmetic number, because the mean of its divisors is an integer number (101148144).

Almost surely, 2^649033847 is an apocalyptic number.

649033847 is a deficient number, since it is larger than the sum of its proper divisors (160151305).

649033847 is a wasteful number, since it uses less digits than its factorization.

649033847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8429029.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 649033847 is about 25476.1427025364. The cubic root of 649033847 is about 865.8097030251.

The spelling of 649033847 in words is "six hundred forty-nine million, thirty-three thousand, eight hundred forty-seven".