620432 has 20 divisors (see below), whose sum is σ = 1273356. Its totient is φ = 291840.

The previous prime is 620429. The next prime is 620437. The reversal of 620432 is 234026.

620432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 190096 = 656^2 + 436^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 620432.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620432.

It is not an unprimeable number, because it can be changed into a prime (620437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869 + ... + 1412.

2⁶²⁰⁴³² is an apocalyptic number.

It is an amenable number.

620432 is an abundant number, since it is smaller than the sum of its proper divisors (652924).

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

620432 is a wasteful number, since it uses less digits than its factorization.

620432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 620432 is about 787.6750599073. The cubic root of 620432 is about 85.2899899240.

Adding to 620432 its reverse (234026), we get a palindrome (854458).

The spelling of 620432 in words is "six hundred twenty thousand, four hundred thirty-two".