1648630 has 16 divisors (see below), whose sum is σ = 3124080. Its totient is φ = 624672.

The previous prime is 1648613. The next prime is 1648697. The reversal of 1648630 is 368461.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4149 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (195255).

2^1648630 is an apocalyptic number.

1648630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648630 is a deficient number, since it is larger than the sum of its proper divisors (1475450).

1648630 is a wasteful number, since it uses less digits than its factorization.

1648630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1648630 is about 1283.9898753495. The cubic root of 1648630 is about 118.1338613025.

It can be divided in two parts, 1648 and 630, that added together give a triangular number (2278 = T₆₇).

The spelling of 1648630 in words is "one million, six hundred forty-eight thousand, six hundred thirty".