620343511 has 8 divisors (see below), whose sum is σ = 668196864. Its totient is φ = 574230360.

The previous prime is 620343509. The next prime is 620343527. The reversal of 620343511 is 115343026.

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

It is not a de Polignac number, because 620343511 - 2¹ = 620343509 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 (620343551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434311 + ... + 435736.

It is an arithmetic number, because the mean of its divisors is an integer number (83524608).

Almost surely, 2^620343511 is an apocalyptic number.

620343511 is a deficient number, since it is larger than the sum of its proper divisors (47853353).

620343511 is a wasteful number, since it uses less digits than its factorization.

620343511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870101.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 620343511 is about 24906.6961076735. The cubic root of 620343511 is about 852.8593490821.

Adding to 620343511 its reverse (115343026), we get a palindrome (735686537).

The spelling of 620343511 in words is "six hundred twenty million, three hundred forty-three thousand, five hundred eleven".