1660434 has 8 divisors (see below), whose sum is σ = 3320880. Its totient is φ = 553476.

The previous prime is 1660433. The next prime is 1660457. The reversal of 1660434 is 4340661.

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

1660434 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1660433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138364 + ... + 138375.

It is an arithmetic number, because the mean of its divisors is an integer number (415110).

2^1660434 is an apocalyptic number.

1660434 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.

1660434 is a wasteful number, since it uses less digits than its factorization.

1660434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276744.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1660434 is about 1288.5782863296. The cubic root of 1660434 is about 118.4151326683.

The spelling of 1660434 in words is "one million, six hundred sixty thousand, four hundred thirty-four".