649676 has 6 divisors (see below), whose sum is σ = 1136940. Its totient is φ = 324836.

The previous prime is 649661. The next prime is 649697. The reversal of 649676 is 676946.

It is an Ulam number.

It is an unprimeable number.

649676 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 81206 + ... + 81213.

It is an arithmetic number, because the mean of its divisors is an integer number (189490).

2⁶⁴⁹⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

649676 is a deficient number, since it is larger than the sum of its proper divisors (487264).

649676 is a wasteful number, since it uses less digits than its factorization.

649676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162423 (or 162421 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 649676 is about 806.0248135138. The cubic root of 649676 is about 86.6095152461.

The spelling of 649676 in words is "six hundred forty-nine thousand, six hundred seventy-six".