1665150 has 48 divisors (see below), whose sum is σ = 4379184. Its totient is φ = 417280.

The previous prime is 1665149. The next prime is 1665161. The reversal of 1665150 is 515661.

It is a self number, because there is not a number n which added to its sum of digits gives 1665150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2224 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (91233).

2^1665150 is an apocalyptic number.

1665150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2189592).

1665150 is an abundant number, since it is smaller than the sum of its proper divisors (2714034).

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

1665150 is a wasteful number, since it uses less digits than its factorization.

1665150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1665150 is about 1290.4069125667. The cubic root of 1665150 is about 118.5271350916.

The spelling of 1665150 in words is "one million, six hundred sixty-five thousand, one hundred fifty".