1660449 has 16 divisors (see below), whose sum is σ = 2599808. Its totient is φ = 922752.

The previous prime is 1660433. The next prime is 1660457. The reversal of 1660449 is 9440661.

It is not a de Polignac number, because 1660449 - 2⁴ = 1660433 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292 + ... + 1845.

It is an arithmetic number, because the mean of its divisors is an integer number (162488).

2^1660449 is an apocalyptic number.

It is an amenable number.

1660449 is a deficient number, since it is larger than the sum of its proper divisors (939359).

1660449 is a wasteful number, since it uses less digits than its factorization.

1660449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1660449 is about 1288.5841066845. The cubic root of 1660449 is about 118.4154892461.

It can be divided in two parts, 16604 and 49, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 1660449 in words is "one million, six hundred sixty thousand, four hundred forty-nine".