649108 has 6 divisors (see below), whose sum is σ = 1135946. Its totient is φ = 324552.

The previous prime is 649093. The next prime is 649123. The reversal of 649108 is 801946.

It is an interprime number because it is at equal distance from previous prime (649093) and next prime (649123).

It can be written as a sum of positive squares in only one way, i.e., 407044 + 242064 = 638^2 + 492^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81135 + ... + 81142.

2⁶⁴⁹¹⁰⁸ is an apocalyptic number.

It is an amenable number.

649108 is a deficient number, since it is larger than the sum of its proper divisors (486838).

649108 is a wasteful number, since it uses less digits than its factorization.

649108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162281 (or 162279 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 649108 is about 805.6723899948. The cubic root of 649108 is about 86.5842675082.

It can be divided in two parts, 649 and 108, that added together give a palindrome (757).

The spelling of 649108 in words is "six hundred forty-nine thousand, one hundred eight".