620543555 has 16 divisors (see below), whose sum is σ = 751996224. Its totient is φ = 491558400.

The previous prime is 620543551. The next prime is 620543617. The reversal of 620543555 is 555345026.

It is not a de Polignac number, because 620543555 - 2² = 620543551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620543551) 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 15 ways as a sum of consecutive naturals, for example, 343655 + ... + 345455.

It is an arithmetic number, because the mean of its divisors is an integer number (46999764).

Almost surely, 2^620543555 is an apocalyptic number.

620543555 is a deficient number, since it is larger than the sum of its proper divisors (131452669).

620543555 is a wasteful number, since it uses less digits than its factorization.

620543555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 620543555 is about 24910.7116518176. The cubic root of 620543555 is about 852.9510139189.

The spelling of 620543555 in words is "six hundred twenty million, five hundred forty-three thousand, five hundred fifty-five".