601664 has 56 divisors (see below), whose sum is σ = 1463040. Its totient is φ = 239616.

The previous prime is 601651. The next prime is 601669. The reversal of 601664 is 466106.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7577 + ... + 7655.

2⁶⁰¹⁶⁶⁴ is an apocalyptic number.

601664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 601664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731520).

601664 is an abundant number, since it is smaller than the sum of its proper divisors (861376).

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

601664 is a wasteful number, since it uses less digits than its factorization.

601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 105 counting only the distinct ones).

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

The square root of 601664 is about 775.6700329393. The cubic root of 601664 is about 84.4211652256.

The spelling of 601664 in words is "six hundred one thousand, six hundred sixty-four".