1630650 has 48 divisors (see below), whose sum is σ = 4624704. Its totient is φ = 372480.

The previous prime is 1630633. The next prime is 1630663. The reversal of 1630650 is 560361.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 23 ways as a sum of consecutive naturals, for example, 274 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (96348).

2^1630650 is an apocalyptic number.

1630650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312352).

1630650 is an abundant number, since it is smaller than the sum of its proper divisors (2994054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630650 is a wasteful number, since it uses less digits than its factorization.

1630650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1630650 is about 1276.9690677538. The cubic root of 1630650 is about 117.7028336028.

The spelling of 1630650 in words is "one million, six hundred thirty thousand, six hundred fifty".