1630285 has 4 divisors (see below), whose sum is σ = 1956348. Its totient is φ = 1304224.

The previous prime is 1630273. The next prime is 1630303. The reversal of 1630285 is 5820361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1295044 + 335241 = 1138^2 + 579^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630285 - 2⁵ = 1630253 is a prime.

It is a d-powerful number, because it can be written as 1 + 6² + 3¹³ + 0 + 2⁵ + 8⁵ + 5⁵ .

It is a Duffinian number.

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, 163024 + ... + 163033.

It is an arithmetic number, because the mean of its divisors is an integer number (489087).

2^1630285 is an apocalyptic number.

It is an amenable number.

1630285 is a deficient number, since it is larger than the sum of its proper divisors (326063).

1630285 is an equidigital number, since it uses as much as digits as its factorization.

1630285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326062.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1630285 is about 1276.8261432161. The cubic root of 1630285 is about 117.6940508597.

The spelling of 1630285 in words is "one million, six hundred thirty thousand, two hundred eighty-five".