1661030 has 32 divisors (see below), whose sum is σ = 3481920. Its totient is φ = 558720.

The previous prime is 1661029. The next prime is 1661059. The reversal of 1661030 is 301661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4076 + ... + 4464.

It is an arithmetic number, because the mean of its divisors is an integer number (108810).

2^1661030 is an apocalyptic number.

1661030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661030 is an abundant number, since it is smaller than the sum of its proper divisors (1820890).

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

1661030 is a wasteful number, since it uses less digits than its factorization.

1661030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1661030 is about 1288.8095282081. The cubic root of 1661030 is about 118.4292990402.

Adding to 1661030 its reverse (301661), we get a palindrome (1962691).

The spelling of 1661030 in words is "one million, six hundred sixty-one thousand, thirty".