601640 has 48 divisors (see below), whose sum is σ = 1482300. Its totient is φ = 219648.

The previous prime is 601631. The next prime is 601651. The reversal of 601640 is 46106.

It can be written as a sum of positive squares in 6 ways, for example, as 14884 + 586756 = 122^2 + 766^2 .

It is a congruent number.

It is an unprimeable number.

601640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6716 + ... + 6804.

2⁶⁰¹⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 601640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741150).

601640 is an abundant number, since it is smaller than the sum of its proper divisors (880660).

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

601640 is a wasteful number, since it uses less digits than its factorization.

601640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 601640 is about 775.6545622892. The cubic root of 601640 is about 84.4200427083.

Adding to 601640 its reverse (46106), we get a palindrome (647746).

The spelling of 601640 in words is "six hundred one thousand, six hundred forty".