628752385 has 8 divisors (see below), whose sum is σ = 778841856. Its totient is φ = 486775920.

The previous prime is 628752379. The next prime is 628752391. The reversal of 628752385 is 583257826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628752379) and next prime (628752391).

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

It is not a de Polignac number, because 628752385 - 2¹⁵ = 628719617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028079 + ... + 2028388.

It is an arithmetic number, because the mean of its divisors is an integer number (97355232).

It is a Proth number, since it is equal to 4797 ⋅ 2¹⁷ + 1 and 4797 < 2¹⁷.

Almost surely, 2^628752385 is an apocalyptic number.

It is an amenable number.

628752385 is a deficient number, since it is larger than the sum of its proper divisors (150089471).

628752385 is a wasteful number, since it uses less digits than its factorization.

628752385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056503.

The product of its digits is 806400, while the sum is 46.

The square root of 628752385 is about 25074.9353937353. The cubic root of 628752385 is about 856.6956239024.

The spelling of 628752385 in words is "six hundred twenty-eight million, seven hundred fifty-two thousand, three hundred eighty-five".