628086493 has 2 divisors, whose sum is σ = 628086494. Its totient is φ = 628086492.

The previous prime is 628086479. The next prime is 628086533. The reversal of 628086493 is 394680826.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622901764 + 5184729 = 24958^2 + 2277^2 .

It is a cyclic number.

It is not a de Polignac number, because 628086493 - 2¹⁷ = 627955421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628086593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314043246 + 314043247.

It is an arithmetic number, because the mean of its divisors is an integer number (314043247).

Almost surely, 2^628086493 is an apocalyptic number.

It is an amenable number.

628086493 is a deficient number, since it is larger than the sum of its proper divisors (1).

628086493 is an equidigital number, since it uses as much as digits as its factorization.

628086493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 628086493 is about 25061.6538360899. The cubic root of 628086493 is about 856.3930838869.

The spelling of 628086493 in words is "six hundred twenty-eight million, eighty-six thousand, four hundred ninety-three".