649106340 has 48 divisors (see below), whose sum is σ = 1823750208. Its totient is φ = 172499584.

The previous prime is 649106327. The next prime is 649106351. The reversal of 649106340 is 43601946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882 + ... + 36041.

It is an arithmetic number, because the mean of its divisors is an integer number (37994796).

Almost surely, 2^649106340 is an apocalyptic number.

649106340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649106340 is an abundant number, since it is smaller than the sum of its proper divisors (1174643868).

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

649106340 is a wasteful number, since it uses less digits than its factorization.

649106340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37228 (or 37226 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 649106340 is about 25477.5654252913. The cubic root of 649106340 is about 865.8419369917.

The spelling of 649106340 in words is "six hundred forty-nine million, one hundred six thousand, three hundred forty".