1661034 has 8 divisors (see below), whose sum is σ = 3322080. Its totient is φ = 553676.

The previous prime is 1661029. The next prime is 1661059. The reversal of 1661034 is 4301661.

It is a sphenic number, since it is the product of 3 distinct primes.

1661034 is an admirable number.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1661034.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138414 + ... + 138425.

It is an arithmetic number, because the mean of its divisors is an integer number (415260).

2^1661034 is an apocalyptic number.

1661034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1661034 is a wasteful number, since it uses less digits than its factorization.

1661034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276844.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1661034 is about 1288.8110800269. The cubic root of 1661034 is about 118.4293941051.

Adding to 1661034 its reverse (4301661), we get a palindrome (5962695).

The spelling of 1661034 in words is "one million, six hundred sixty-one thousand, thirty-four".