628591451 has 2 divisors, whose sum is σ = 628591452. Its totient is φ = 628591450.

The previous prime is 628591441. The next prime is 628591463. The reversal of 628591451 is 154195826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628591451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628591399 and 628591408.

It is not a weakly prime, because it can be changed into another prime (628591441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314295725 + 314295726.

It is an arithmetic number, because the mean of its divisors is an integer number (314295726).

Almost surely, 2^628591451 is an apocalyptic number.

628591451 is a deficient number, since it is larger than the sum of its proper divisors (1).

628591451 is an equidigital number, since it uses as much as digits as its factorization.

628591451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 628591451 is about 25071.7261272534. The cubic root of 628591451 is about 856.6225250579.

The spelling of 628591451 in words is "six hundred twenty-eight million, five hundred ninety-one thousand, four hundred fifty-one".