649785004 has 18 divisors (see below), whose sum is σ = 1249897292. Its totient is φ = 295356600.

The previous prime is 649785001. The next prime is 649785013. The reversal of 649785004 is 400587946.

It is not an unprimeable number, because it can be changed into a prime (649785001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 670782 + ... + 671749.

Almost surely, 2^649785004 is an apocalyptic number.

It is an amenable number.

649785004 is a deficient number, since it is larger than the sum of its proper divisors (600112288).

649785004 is a wasteful number, since it uses less digits than its factorization.

649785004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342557 (or 1342544 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 649785004 is about 25490.8808007883. The cubic root of 649785004 is about 866.1435881717.

The spelling of 649785004 in words is "six hundred forty-nine million, seven hundred eighty-five thousand, four".