652440 has 32 divisors (see below), whose sum is σ = 1957680. Its totient is φ = 173952.

The previous prime is 652429. The next prime is 652447. The reversal of 652440 is 44256.

It is a happy number.

652440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652447) by changing a digit.

652440 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 7 ways as a sum of consecutive naturals, for example, 2599 + ... + 2838.

2⁶⁵²⁴⁴⁰ is an apocalyptic number.

652440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

652440 is an abundant number, since it is smaller than the sum of its proper divisors (1305240).

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

652440 is a wasteful number, since it uses less digits than its factorization.

652440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451 (or 5447 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 652440 is about 807.7375811487. The cubic root of 652440 is about 86.7321661331.

Adding to 652440 its reverse (44256), we get a palindrome (696696).

The spelling of 652440 in words is "six hundred fifty-two thousand, four hundred forty".