649753105698 has 48 divisors (see below), whose sum is σ = 1415034092472. Its totient is φ = 215472960000.

The previous prime is 649753105619. The next prime is 649753105699. The reversal of 649753105698 is 896501357946.

649753105698 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 53 + 10 + 569 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 644723884809 + 5029220889 = 802947^2 + 70917^2 .

It is not an unprimeable number, because it can be changed into a prime (649753105699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4355748 + ... + 4502448.

Almost surely, 2^649753105698 is an apocalyptic number.

649753105698 is an abundant number, since it is smaller than the sum of its proper divisors (765280986774).

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

649753105698 is a wasteful number, since it uses less digits than its factorization.

649753105698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147971 (or 147968 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 649753105698 in words is "six hundred forty-nine billion, seven hundred fifty-three million, one hundred five thousand, six hundred ninety-eight".