1601766 has 48 divisors (see below), whose sum is σ = 3740256. Its totient is φ = 494208.

The previous prime is 1601749. The next prime is 1601773. The reversal of 1601766 is 6671061.

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, 21906 + ... + 21978.

It is an arithmetic number, because the mean of its divisors is an integer number (77922).

2^1601766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870128).

1601766 is an abundant number, since it is smaller than the sum of its proper divisors (2138490).

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

1601766 is a wasteful number, since it uses less digits than its factorization.

1601766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1601766 is about 1265.6089443426. The cubic root of 1601766 is about 117.0037255005.

The spelling of 1601766 in words is "one million, six hundred one thousand, seven hundred sixty-six".