1630773 has 14 divisors (see below), whose sum is σ = 2446134. Its totient is φ = 1086696.

The previous prime is 1630771. The next prime is 1630777. The reversal of 1630773 is 3770361.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 88209 = 1242^2 + 297^2 .

It is not a de Polignac number, because 1630773 - 2¹ = 1630771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon 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 polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 390 + ... + 1847.

2^1630773 is an apocalyptic number.

It is an amenable number.

1630773 is a deficient number, since it is larger than the sum of its proper divisors (815361).

1630773 is an frugal number, since it uses more digits than its factorization.

1630773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 1630773 is about 1277.0172277616. The cubic root of 1630773 is about 117.7057929717.

The spelling of 1630773 in words is "one million, six hundred thirty thousand, seven hundred seventy-three".