628749527 has 8 divisors (see below), whose sum is σ = 733236000. Its totient is φ = 538927872.

The previous prime is 628749467. The next prime is 628749557. The reversal of 628749527 is 725947826.

It is not a de Polignac number, because 628749527 - 2¹² = 628745431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628749557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916202 + ... + 916887.

It is an arithmetic number, because the mean of its divisors is an integer number (91654500).

Almost surely, 2^628749527 is an apocalyptic number.

628749527 is a deficient number, since it is larger than the sum of its proper divisors (104486473).

628749527 is an equidigital number, since it uses as much as digits as its factorization.

628749527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833110 (or 1833096 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 628749527 is about 25074.8784044908. The cubic root of 628749527 is about 856.6943258610.

The spelling of 628749527 in words is "six hundred twenty-eight million, seven hundred forty-nine thousand, five hundred twenty-seven".