620611611 has 8 divisors (see below), whose sum is σ = 871033920. Its totient is φ = 391965192.

The previous prime is 620611603. The next prime is 620611613. The reversal of 620611611 is 116116026.

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

It is not a de Polignac number, because 620611611 - 2³ = 620611603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620611613) 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, 5443905 + ... + 5444018.

It is an arithmetic number, because the mean of its divisors is an integer number (108879240).

Almost surely, 2^620611611 is an apocalyptic number.

620611611 is a deficient number, since it is larger than the sum of its proper divisors (250422309).

620611611 is a wasteful number, since it uses less digits than its factorization.

620611611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10887945.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 620611611 is about 24912.0776130776. The cubic root of 620611611 is about 852.9821942777.

Adding to 620611611 its reverse (116116026), we get a palindrome (736727637).

The spelling of 620611611 in words is "six hundred twenty million, six hundred eleven thousand, six hundred eleven".