1648629 has 12 divisors (see below), whose sum is σ = 2411136. Its totient is φ = 1085352.

The previous prime is 1648613. The next prime is 1648697. The reversal of 1648629 is 9268461.

1648629 is a `hidden beast` number, since 1 + 648 + 6 + 2 + 9 = 666.

It is not a de Polignac number, because 1648629 - 2⁴ = 1648613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1648593 and 1648602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (200928).

2^1648629 is an apocalyptic number.

It is an amenable number.

1648629 is a deficient number, since it is larger than the sum of its proper divisors (762507).

1648629 is a wasteful number, since it uses less digits than its factorization.

1648629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 2293 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1648629 is about 1283.9894859383. The cubic root of 1648629 is about 118.1338374173.

The spelling of 1648629 in words is "one million, six hundred forty-eight thousand, six hundred twenty-nine".