620542 has 16 divisors (see below), whose sum is σ = 1038240. Its totient is φ = 276192.

The previous prime is 620531. The next prime is 620549. The reversal of 620542 is 245026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620549) by changing a digit.

620542 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, 343 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (64890).

2⁶²⁰⁵⁴² is an apocalyptic number.

620542 is a deficient number, since it is larger than the sum of its proper divisors (417698).

620542 is a wasteful number, since it uses less digits than its factorization.

620542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 620542 is about 787.7448825603. The cubic root of 620542 is about 85.2950301457.

Adding to 620542 its reverse (245026), we get a palindrome (865568).

The spelling of 620542 in words is "six hundred twenty thousand, five hundred forty-two".