649868827910 has 8 divisors (see below), whose sum is σ = 1169763890256. Its totient is φ = 259947531160.

The previous prime is 649868827901. The next prime is 649868827943. The reversal of 649868827910 is 19728868946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32493441386 + ... + 32493441405.

It is an arithmetic number, because the mean of its divisors is an integer number (146220486282).

Almost surely, 2^649868827910 is an apocalyptic number.

649868827910 is a deficient number, since it is larger than the sum of its proper divisors (519895062346).

649868827910 is a wasteful number, since it uses less digits than its factorization.

649868827910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64986882798.

The product of its (nonzero) digits is 83607552, while the sum is 68.

The spelling of 649868827910 in words is "six hundred forty-nine billion, eight hundred sixty-eight million, eight hundred twenty-seven thousand, nine hundred ten".