652540 has 48 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 217152.

The previous prime is 652507. The next prime is 652541. The reversal of 652540 is 45256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8221 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (33600).

2⁶⁵²⁵⁴⁰ 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 652540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806400).

652540 is an abundant number, since it is smaller than the sum of its proper divisors (960260).

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

652540 is a wasteful number, since it uses less digits than its factorization.

652540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 652540 is about 807.7994800692. The cubic root of 652540 is about 86.7365970761.

Adding to 652540 its reverse (45256), we get a palindrome (697796).

The spelling of 652540 in words is "six hundred fifty-two thousand, five hundred forty".