620547673 has 4 divisors (see below), whose sum is σ = 620617140. Its totient is φ = 620478208.

The previous prime is 620547667. The next prime is 620547727. The reversal of 620547673 is 376745026.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 199600384 + 420947289 = 14128^2 + 20517^2 .

It is a cyclic number.

It is not a de Polignac number, because 620547673 - 2²⁵ = 586993241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620547623) 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 3 ways as a sum of consecutive naturals, for example, 18940 + ... + 39997.

It is an arithmetic number, because the mean of its divisors is an integer number (155154285).

Almost surely, 2^620547673 is an apocalyptic number.

It is an amenable number.

620547673 is a deficient number, since it is larger than the sum of its proper divisors (69467).

620547673 is a wasteful number, since it uses less digits than its factorization.

620547673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69466.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 620547673 is about 24910.7943068863. The cubic root of 620547673 is about 852.9529006758.

The spelling of 620547673 in words is "six hundred twenty million, five hundred forty-seven thousand, six hundred seventy-three".