620642 has 8 divisors (see below), whose sum is σ = 1015632. Its totient is φ = 282100.

The previous prime is 620639. The next prime is 620647. The reversal of 620642 is 246026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (620647) 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, 14084 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (126954).

2⁶²⁰⁶⁴² is an apocalyptic number.

620642 is a deficient number, since it is larger than the sum of its proper divisors (394990).

620642 is a wasteful number, since it uses less digits than its factorization.

620642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28224.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 620642 is about 787.8083523294. The cubic root of 620642 is about 85.2996116486.

Adding to 620642 its reverse (246026), we get a palindrome (866668).

The spelling of 620642 in words is "six hundred twenty thousand, six hundred forty-two".