620750 has 32 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 228000.

The previous prime is 620743. The next prime is 620759. The reversal of 620750 is 57026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620759) by changing a digit.

620750 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 in 15 ways as a sum of consecutive naturals, for example, 3155 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2⁶²⁰⁷⁵⁰ is an apocalyptic number.

620750 is an abundant number, since it is smaller than the sum of its proper divisors (637234).

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

620750 is a wasteful number, since it uses less digits than its factorization.

620750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 620750 is about 787.8768939371. The cubic root of 620750 is about 85.3045591190.

Adding to 620750 its reverse (57026), we get a palindrome (677776).

The spelling of 620750 in words is "six hundred twenty thousand, seven hundred fifty".