649287883 has 8 divisors (see below), whose sum is σ = 653469696. Its totient is φ = 645114600.

The previous prime is 649287811. The next prime is 649287887. The reversal of 649287883 is 388782946.

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 649287883 - 2⁹ = 649287371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649287887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222210 + ... + 225112.

It is an arithmetic number, because the mean of its divisors is an integer number (81683712).

Almost surely, 2^649287883 is an apocalyptic number.

649287883 is a deficient number, since it is larger than the sum of its proper divisors (4181813).

649287883 is a wasteful number, since it uses less digits than its factorization.

649287883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265.

The product of its digits is 4644864, while the sum is 55.

The square root of 649287883 is about 25481.1279773875. The cubic root of 649287883 is about 865.9226494427.

The spelling of 649287883 in words is "six hundred forty-nine million, two hundred eighty-seven thousand, eight hundred eighty-three".