1630646 has 16 divisors (see below), whose sum is σ = 2549184. Its totient is φ = 781704.

The previous prime is 1630633. The next prime is 1630663. The reversal of 1630646 is 6460361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5621 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (159324).

2^1630646 is an apocalyptic number.

1630646 is a deficient number, since it is larger than the sum of its proper divisors (918538).

1630646 is a wasteful number, since it uses less digits than its factorization.

1630646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1630646 is about 1276.9675015442. The cubic root of 1630646 is about 117.7027373607.

The spelling of 1630646 in words is "one million, six hundred thirty thousand, six hundred forty-six".