628476461 has 2 divisors, whose sum is σ = 628476462. Its totient is φ = 628476460.

The previous prime is 628476421. The next prime is 628476479. The reversal of 628476461 is 164674826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580520836 + 47955625 = 24094^2 + 6925^2 .

It is a cyclic number.

It is not a de Polignac number, because 628476461 - 2⁶ = 628476397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628476421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314238230 + 314238231.

It is an arithmetic number, because the mean of its divisors is an integer number (314238231).

Almost surely, 2^628476461 is an apocalyptic number.

It is an amenable number.

628476461 is a deficient number, since it is larger than the sum of its proper divisors (1).

628476461 is an equidigital number, since it uses as much as digits as its factorization.

628476461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 628476461 is about 25069.4328017209. The cubic root of 628476461 is about 856.5702870841.

The spelling of 628476461 in words is "six hundred twenty-eight million, four hundred seventy-six thousand, four hundred sixty-one".