649316 has 12 divisors (see below), whose sum is σ = 1142400. Its totient is φ = 322920.

The previous prime is 649307. The next prime is 649321. The reversal of 649316 is 613946.

It is a super-2 number, since 2×649316² = 843222535712, which contains 22 as substring.

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, 785 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (95200).

2⁶⁴⁹³¹⁶ is an apocalyptic number.

It is an amenable number.

649316 is a deficient number, since it is larger than the sum of its proper divisors (493084).

649316 is a wasteful number, since it uses less digits than its factorization.

649316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 872 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 649316 is about 805.8014643819. The cubic root of 649316 is about 86.5935148673.

The spelling of 649316 in words is "six hundred forty-nine thousand, three hundred sixteen".