671528 has 32 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 281280.

The previous prime is 671519. The next prime is 671533. The reversal of 671528 is 825176.

671528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 671528.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (46305).

2⁶⁷¹⁵²⁸ 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 671528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740880).

671528 is an abundant number, since it is smaller than the sum of its proper divisors (810232).

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

671528 is a wasteful number, since it uses less digits than its factorization.

671528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 671528 is about 819.4681201853. The cubic root of 671528 is about 87.5698707224.

The spelling of 671528 in words is "six hundred seventy-one thousand, five hundred twenty-eight".