1630682 has 4 divisors (see below), whose sum is σ = 2446026. Its totient is φ = 815340.

The previous prime is 1630669. The next prime is 1630721. The reversal of 1630682 is 2860361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2860361 = 7 ⋅408623.

It can be written as a sum of positive squares in only one way, i.e., 1540081 + 90601 = 1241^2 + 301^2 .

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 as a sum of consecutive naturals, namely, 407669 + ... + 407672.

2^1630682 is an apocalyptic number.

1630682 is a deficient number, since it is larger than the sum of its proper divisors (815344).

1630682 is an equidigital number, since it uses as much as digits as its factorization.

1630682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815343.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1630682 is about 1276.9815973615. The cubic root of 1630682 is about 117.7036035342.

The spelling of 1630682 in words is "one million, six hundred thirty thousand, six hundred eighty-two".