1630775 has 24 divisors (see below), whose sum is σ = 2176944. Its totient is φ = 1209600.

The previous prime is 1630771. The next prime is 1630777. The reversal of 1630775 is 5770361.

It is not a de Polignac number, because 1630775 - 2² = 1630771 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630771) by changing a digit.

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, 37904 + ... + 37946.

It is an arithmetic number, because the mean of its divisors is an integer number (90706).

2^1630775 is an apocalyptic number.

1630775 is a deficient number, since it is larger than the sum of its proper divisors (546169).

1630775 is a wasteful number, since it uses less digits than its factorization.

1630775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 1630775 is about 1277.0180108362. The cubic root of 1630775 is about 117.7058410903.

The spelling of 1630775 in words is "one million, six hundred thirty thousand, seven hundred seventy-five".