620245 has 8 divisors (see below), whose sum is σ = 788184. Its totient is φ = 466944.

The previous prime is 620239. The next prime is 620251. The reversal of 620245 is 542026.

It is an interprime number because it is at equal distance from previous prime (620239) and next prime (620251).

It can be written as a sum of positive squares in 4 ways, for example, as 88804 + 531441 = 298^2 + 729^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 620245 - 2³ = 620237 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁷ + 2³ + 2⁵ + 0 + 4⁹ + 5⁷ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3564 + ... + 3733.

It is an arithmetic number, because the mean of its divisors is an integer number (98523).

2⁶²⁰²⁴⁵ is an apocalyptic number.

It is an amenable number.

620245 is a deficient number, since it is larger than the sum of its proper divisors (167939).

620245 is a wasteful number, since it uses less digits than its factorization.

620245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319.

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

The square root of 620245 is about 787.5563471905. The cubic root of 620245 is about 85.2814201798.

The spelling of 620245 in words is "six hundred twenty thousand, two hundred forty-five".