649075805684 has 12 divisors (see below), whose sum is σ = 1136303532000. Its totient is φ = 324417653688.

The previous prime is 649075805683. The next prime is 649075805723. The reversal of 649075805684 is 486508570946.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649075805683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30050144 + ... + 30071735.

It is an arithmetic number, because the mean of its divisors is an integer number (94691961000).

Almost surely, 2^649075805684 is an apocalyptic number.

It is an amenable number.

649075805684 is a deficient number, since it is larger than the sum of its proper divisors (487227726316).

649075805684 is a wasteful number, since it uses less digits than its factorization.

649075805684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60124582 (or 60124580 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 649075805684 in words is "six hundred forty-nine billion, seventy-five million, eight hundred five thousand, six hundred eighty-four".