501671604 has 72 divisors (see below), whose sum is σ = 1398542880. Its totient is φ = 139454784.

The previous prime is 501671603. The next prime is 501671617. The reversal of 501671604 is 406176105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501671603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10227 + ... + 33285.

Almost surely, 2^501671604 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 501671604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699271440).

501671604 is an abundant number, since it is smaller than the sum of its proper divisors (896871276).

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

501671604 is a wasteful number, since it uses less digits than its factorization.

501671604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23117 (or 23108 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 501671604 is about 22398.0267880901. The cubic root of 501671604 is about 794.5840441021.

The spelling of 501671604 in words is "five hundred one million, six hundred seventy-one thousand, six hundred four".