1661050 has 24 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 656880.

The previous prime is 1661029. The next prime is 1661059. The reversal of 1661050 is 501661.

It is not an unprimeable number, because it can be changed into a prime (1661059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6831 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (130200).

2^1661050 is an apocalyptic number.

1661050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661050 is a deficient number, since it is larger than the sum of its proper divisors (1463750).

1661050 is a wasteful number, since it uses less digits than its factorization.

1661050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1661050 is about 1288.8172872832. The cubic root of 1661050 is about 118.4297743630.

The spelling of 1661050 in words is "one million, six hundred sixty-one thousand, fifty".