628868799 has 32 divisors (see below), whose sum is σ = 1037937600. Its totient is φ = 373645440.

The previous prime is 628868711. The next prime is 628868803. The reversal of 628868799 is 997868826.

It is not a de Polignac number, because 628868799 - 2⁹ = 628868287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628868299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20712 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (32435550).

Almost surely, 2^628868799 is an apocalyptic number.

628868799 is a deficient number, since it is larger than the sum of its proper divisors (409068801).

628868799 is a wasteful number, since it uses less digits than its factorization.

628868799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61832 (or 61826 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 628868799 is about 25077.2566083294. The cubic root of 628868799 is about 856.7484932631.

The spelling of 628868799 in words is "six hundred twenty-eight million, eight hundred sixty-eight thousand, seven hundred ninety-nine".