628407004447 has 2 divisors, whose sum is σ = 628407004448. Its totient is φ = 628407004446.

The previous prime is 628407004369. The next prime is 628407004493. The reversal of 628407004447 is 744400704826.

It is an a-pointer prime, because the next prime (628407004493) can be obtained adding 628407004447 to its sum of digits (46).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628407004447 - 2²³ = 628398615839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628407004397 and 628407004406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628407007447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314203502223 + 314203502224.

It is an arithmetic number, because the mean of its divisors is an integer number (314203502224).

Almost surely, 2^628407004447 is an apocalyptic number.

628407004447 is a deficient number, since it is larger than the sum of its proper divisors (1).

628407004447 is an equidigital number, since it uses as much as digits as its factorization.

628407004447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 46.

The spelling of 628407004447 in words is "six hundred twenty-eight billion, four hundred seven million, four thousand, four hundred forty-seven".