1630506 has 16 divisors (see below), whose sum is σ = 3274848. Its totient is φ = 541200.

The previous prime is 1630501. The next prime is 1630543. The reversal of 1630506 is 6050361.

It is not an unprimeable number, because it can be changed into a prime (1630501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (204678).

2^1630506 is an apocalyptic number.

1630506 is an abundant number, since it is smaller than the sum of its proper divisors (1644342).

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

1630506 is a wasteful number, since it uses less digits than its factorization.

1630506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157.

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

The square root of 1630506 is about 1276.9126829975. The cubic root of 1630506 is about 117.6993687867.

Adding to 1630506 its reverse (6050361), we get a palindrome (7680867).

The spelling of 1630506 in words is "one million, six hundred thirty thousand, five hundred six".