649840598 has 32 divisors (see below), whose sum is σ = 1082404512. Its totient is φ = 290131200.

The previous prime is 649840591. The next prime is 649840621. The reversal of 649840598 is 895048946.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649840591) 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 15 ways as a sum of consecutive naturals, for example, 469868 + ... + 471248.

It is an arithmetic number, because the mean of its divisors is an integer number (33825141).

Almost surely, 2^649840598 is an apocalyptic number.

649840598 is a deficient number, since it is larger than the sum of its proper divisors (432563914).

649840598 is a wasteful number, since it uses less digits than its factorization.

649840598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 649840598 is about 25491.9712458648. The cubic root of 649840598 is about 866.1682891692.

The spelling of 649840598 in words is "six hundred forty-nine million, eight hundred forty thousand, five hundred ninety-eight".