620258 has 4 divisors (see below), whose sum is σ = 930390. Its totient is φ = 310128.

The previous prime is 620251. The next prime is 620261. The reversal of 620258 is 852026.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 120409 = 707^2 + 347^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (620251) by changing a digit.

620258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155063 + ... + 155066.

2⁶²⁰²⁵⁸ is an apocalyptic number.

620258 is a deficient number, since it is larger than the sum of its proper divisors (310132).

620258 is a wasteful number, since it uses less digits than its factorization.

620258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310131.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 620258 is about 787.5646005249. The cubic root of 620258 is about 85.2820159931.

It can be divided in two parts, 620 and 258, that added together give a palindrome (878).

The spelling of 620258 in words is "six hundred twenty thousand, two hundred fifty-eight".