620511061 has 8 divisors (see below), whose sum is σ = 634233600. Its totient is φ = 606810288.

The previous prime is 620510983. The next prime is 620511077. The reversal of 620511061 is 160115026.

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 620511061 - 2¹¹ = 620509013 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 (620511091) 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, 61035 + ... + 70471.

It is an arithmetic number, because the mean of its divisors is an integer number (79279200).

Almost surely, 2^620511061 is an apocalyptic number.

It is an amenable number.

620511061 is a deficient number, since it is larger than the sum of its proper divisors (13722539).

620511061 is a wasteful number, since it uses less digits than its factorization.

620511061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 620511061 is about 24910.0594338914. The cubic root of 620511061 is about 852.9361257487.

Adding to 620511061 its reverse (160115026), we get a palindrome (780626087).

The spelling of 620511061 in words is "six hundred twenty million, five hundred eleven thousand, sixty-one".