620520733 has 8 divisors (see below), whose sum is σ = 709727040. Its totient is φ = 531454560.

The previous prime is 620520721. The next prime is 620520739. The reversal of 620520733 is 337025026.

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

It is not a de Polignac number, because 620520733 - 2²¹ = 618423581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620520739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25363 + ... + 43408.

It is an arithmetic number, because the mean of its divisors is an integer number (88715880).

Almost surely, 2^620520733 is an apocalyptic number.

It is an amenable number.

620520733 is a deficient number, since it is larger than the sum of its proper divisors (89206307).

620520733 is a wasteful number, since it uses less digits than its factorization.

620520733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70067.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 620520733 is about 24910.2535715717. The cubic root of 620520733 is about 852.9405573406.

Adding to 620520733 its reverse (337025026), we get a palindrome (957545759).

The spelling of 620520733 in words is "six hundred twenty million, five hundred twenty thousand, seven hundred thirty-three".