1651648 has 28 divisors (see below), whose sum is σ = 3319272. Its totient is φ = 815360.

The previous prime is 1651621. The next prime is 1651667. The reversal of 1651648 is 8461561.

It is a super-2 number, since 2×1651648² = 5455882231808, which contains 22 as substring.

It is a congruent number.

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, 8286 + ... + 8482.

2^1651648 is an apocalyptic number.

It is an amenable number.

1651648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1651648 is a wasteful number, since it uses less digits than its factorization.

1651648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 330 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 1651648 is about 1285.1645809000. The cubic root of 1651648 is about 118.2059030705.

The spelling of 1651648 in words is "one million, six hundred fifty-one thousand, six hundred forty-eight".