1600664 has 16 divisors (see below), whose sum is σ = 3232320. Its totient is φ = 738720.

The previous prime is 1600663. The next prime is 1600691. The reversal of 1600664 is 4660061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1600663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7592 + ... + 7799.

It is an arithmetic number, because the mean of its divisors is an integer number (202020).

2^1600664 is an apocalyptic number.

It is an amenable number.

1600664 is an abundant number, since it is smaller than the sum of its proper divisors (1631656).

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

1600664 is a wasteful number, since it uses less digits than its factorization.

1600664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15410 (or 15406 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1600664 is about 1265.1735058876. The cubic root of 1600664 is about 116.9768868557.

The spelling of 1600664 in words is "one million, six hundred thousand, six hundred sixty-four".