1601688 has 32 divisors (see below), whose sum is σ = 4368960. Its totient is φ = 485280.

The previous prime is 1601687. The next prime is 1601711. The reversal of 1601688 is 8861061.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (136530).

2^1601688 is an apocalyptic number.

It is an amenable number.

1601688 is an abundant number, since it is smaller than the sum of its proper divisors (2767272).

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

1601688 is a wasteful number, since it uses less digits than its factorization.

1601688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087 (or 6083 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1601688 is about 1265.5781287617. The cubic root of 1601688 is about 117.0018262554.

The spelling of 1601688 in words is "one million, six hundred one thousand, six hundred eighty-eight".