628750079 has 8 divisors (see below), whose sum is σ = 639903120. Its totient is φ = 617613696.

The previous prime is 628750039. The next prime is 628750093. The reversal of 628750079 is 970057826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628750079 - 2¹² = 628745983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628750039) 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, 90887 + ... + 97559.

It is an arithmetic number, because the mean of its divisors is an integer number (79987890).

Almost surely, 2^628750079 is an apocalyptic number.

628750079 is a deficient number, since it is larger than the sum of its proper divisors (11153041).

628750079 is a wasteful number, since it uses less digits than its factorization.

628750079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 628750079 is about 25074.8894115208. The cubic root of 628750079 is about 856.6945765677.

The spelling of 628750079 in words is "six hundred twenty-eight million, seven hundred fifty thousand, seventy-nine".