628655529 has 16 divisors (see below), whose sum is σ = 898212672. Its totient is φ = 389695488.

The previous prime is 628655519. The next prime is 628655539. The reversal of 628655529 is 925556826.

It is an interprime number because it is at equal distance from previous prime (628655519) and next prime (628655539).

It is not a de Polignac number, because 628655529 - 2⁵ = 628655497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (628655519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70024 + ... + 78489.

It is an arithmetic number, because the mean of its divisors is an integer number (56138292).

Almost surely, 2^628655529 is an apocalyptic number.

It is an amenable number.

628655529 is a deficient number, since it is larger than the sum of its proper divisors (269557143).

628655529 is a wasteful number, since it uses less digits than its factorization.

628655529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148616.

The product of its digits is 1296000, while the sum is 48.

The square root of 628655529 is about 25073.0039883537. The cubic root of 628655529 is about 856.6516318241.

The spelling of 628655529 in words is "six hundred twenty-eight million, six hundred fifty-five thousand, five hundred twenty-nine".