620733 has 4 divisors (see below), whose sum is σ = 827648. Its totient is φ = 413820.

The previous prime is 620731. The next prime is 620743. The reversal of 620733 is 337026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 620733 - 2¹ = 620731 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620731) 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, 103453 + ... + 103458.

It is an arithmetic number, because the mean of its divisors is an integer number (206912).

2⁶²⁰⁷³³ is an apocalyptic number.

It is an amenable number.

620733 is a deficient number, since it is larger than the sum of its proper divisors (206915).

620733 is a wasteful number, since it uses less digits than its factorization.

620733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206914.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 620733 is about 787.8661053758. The cubic root of 620733 is about 85.3037803886.

Adding to 620733 its reverse (337026), we get a palindrome (957759).

The spelling of 620733 in words is "six hundred twenty thousand, seven hundred thirty-three".