649795608747 has 12 divisors (see below), whose sum is σ = 979402077264. Its totient is φ = 414362417040.

The previous prime is 649795608731. The next prime is 649795608779. The reversal of 649795608747 is 747806597946.

649795608747 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 9 + 5 + 608 + 7 + 4 + 7 = 666.

It is not a de Polignac number, because 649795608747 - 2⁴ = 649795608731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649795608347) 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 11 ways as a sum of consecutive naturals, for example, 1569554404 + ... + 1569554817.

It is an arithmetic number, because the mean of its divisors is an integer number (81616839772).

Almost surely, 2^649795608747 is an apocalyptic number.

649795608747 is a deficient number, since it is larger than the sum of its proper divisors (329606468517).

649795608747 is a wasteful number, since it uses less digits than its factorization.

649795608747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139109250 (or 3139109247 counting only the distinct ones).

The product of its (nonzero) digits is 640120320, while the sum is 72.

The spelling of 649795608747 in words is "six hundred forty-nine billion, seven hundred ninety-five million, six hundred eight thousand, seven hundred forty-seven".