628557070 has 16 divisors (see below), whose sum is σ = 1131704640. Its totient is φ = 251355744.

The previous prime is 628557067. The next prime is 628557077. The reversal of 628557070 is 70755826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628557077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50971 + ... + 62089.

It is an arithmetic number, because the mean of its divisors is an integer number (70731540).

Almost surely, 2^628557070 is an apocalyptic number.

628557070 is a deficient number, since it is larger than the sum of its proper divisors (503147570).

628557070 is a wasteful number, since it uses less digits than its factorization.

628557070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16779.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 628557070 is about 25071.0404650465. The cubic root of 628557070 is about 856.6069070303.

The spelling of 628557070 in words is "six hundred twenty-eight million, five hundred fifty-seven thousand, seventy".