1649968 has 10 divisors (see below), whose sum is σ = 3196844. Its totient is φ = 824976.

The previous prime is 1649959. The next prime is 1649981. The reversal of 1649968 is 8699461.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51546 + ... + 51577.

2^1649968 is an apocalyptic number.

It is an amenable number.

1649968 is a deficient number, since it is larger than the sum of its proper divisors (1546876).

1649968 is a wasteful number, since it uses less digits than its factorization.

1649968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103131 (or 103125 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 1649968 is about 1284.5108018230. The cubic root of 1649968 is about 118.1658111367.

The spelling of 1649968 in words is "one million, six hundred forty-nine thousand, nine hundred sixty-eight".