628473473 has 2 divisors, whose sum is σ = 628473474. Its totient is φ = 628473472.

The previous prime is 628473451. The next prime is 628473497. The reversal of 628473473 is 374374826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557526544 + 70946929 = 23612^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 628473473 - 2¹⁸ = 628211329 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (628473173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314236736 + 314236737.

It is an arithmetic number, because the mean of its divisors is an integer number (314236737).

Almost surely, 2^628473473 is an apocalyptic number.

It is an amenable number.

628473473 is a deficient number, since it is larger than the sum of its proper divisors (1).

628473473 is an equidigital number, since it uses as much as digits as its factorization.

628473473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 44.

The square root of 628473473 is about 25069.3732071626. The cubic root of 628473473 is about 856.5689296023.

The spelling of 628473473 in words is "six hundred twenty-eight million, four hundred seventy-three thousand, four hundred seventy-three".