620307473 has 2 divisors, whose sum is σ = 620307474. Its totient is φ = 620307472.

The previous prime is 620307463. The next prime is 620307481. The reversal of 620307473 is 374703026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587965504 + 32341969 = 24248^2 + 5687^2 .

It is a cyclic number.

It is not a de Polignac number, because 620307473 - 2¹⁸ = 620045329 is a prime.

It is a super-3 number, since 3×620307473³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (620307403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310153736 + 310153737.

It is an arithmetic number, because the mean of its divisors is an integer number (310153737).

Almost surely, 2^620307473 is an apocalyptic number.

It is an amenable number.

620307473 is a deficient number, since it is larger than the sum of its proper divisors (1).

620307473 is an equidigital number, since it uses as much as digits as its factorization.

620307473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 620307473 is about 24905.9726371005. The cubic root of 620307473 is about 852.8428335334.

The spelling of 620307473 in words is "six hundred twenty million, three hundred seven thousand, four hundred seventy-three".