649682 has 8 divisors (see below), whose sum is σ = 1063152. Its totient is φ = 295300.

The previous prime is 649661. The next prime is 649697. The reversal of 649682 is 286946.

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

It is a super-2 number, since 2×649682² = 844173402248, which contains 22 as substring.

It is a nialpdrome in base 15.

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 in 3 ways as a sum of consecutive naturals, for example, 14744 + ... + 14787.

It is an arithmetic number, because the mean of its divisors is an integer number (132894).

2⁶⁴⁹⁶⁸² is an apocalyptic number.

649682 is a deficient number, since it is larger than the sum of its proper divisors (413470).

649682 is a wasteful number, since it uses less digits than its factorization.

649682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29544.

The product of its digits is 20736, while the sum is 35.

The square root of 649682 is about 806.0285354750. The cubic root of 649682 is about 86.6097818690.

It can be divided in two parts, 649 and 682, that added together give a palindrome (1331).

The spelling of 649682 in words is "six hundred forty-nine thousand, six hundred eighty-two".