501606 has 32 divisors (see below), whose sum is σ = 1274880. Its totient is φ = 143208.

The previous prime is 501601. The next prime is 501617. The reversal of 501606 is 606105.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501601) by changing a digit.

501606 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 15 ways as a sum of consecutive naturals, for example, 286 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (39840).

2⁵⁰¹⁶⁰⁶ is an apocalyptic number.

501606 is an abundant number, since it is smaller than the sum of its proper divisors (773274).

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

501606 is a wasteful number, since it uses less digits than its factorization.

501606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 501606 is about 708.2414842411. The cubic root of 501606 is about 79.4549406460.

The spelling of 501606 in words is "five hundred one thousand, six hundred six".