620973 has 16 divisors (see below), whose sum is σ = 932800. Its totient is φ = 408240.

The previous prime is 620957. The next prime is 620981. The reversal of 620973 is 379026.

It is not a de Polignac number, because 620973 - 2⁴ = 620957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2838 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (58300).

2⁶²⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

620973 is a deficient number, since it is larger than the sum of its proper divisors (311827).

620973 is a wasteful number, since it uses less digits than its factorization.

620973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 620973 is about 788.0184008004. The cubic root of 620973 is about 85.3147729137.

Adding to 620973 its reverse (379026), we get a palindrome (999999).

The spelling of 620973 in words is "six hundred twenty thousand, nine hundred seventy-three".