628446787 has 8 divisors (see below), whose sum is σ = 650280960. Its totient is φ = 606710280.

The previous prime is 628446757. The next prime is 628446839. The reversal of 628446787 is 787644826.

628446787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 628446787 - 2¹⁵ = 628414019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628446757) 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, 11203 + ... + 37180.

It is an arithmetic number, because the mean of its divisors is an integer number (81285120).

Almost surely, 2^628446787 is an apocalyptic number.

628446787 is a deficient number, since it is larger than the sum of its proper divisors (21834173).

628446787 is a wasteful number, since it uses less digits than its factorization.

628446787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48833.

The product of its digits is 3612672, while the sum is 52.

The square root of 628446787 is about 25068.8409584488. The cubic root of 628446787 is about 856.5568056634.

The spelling of 628446787 in words is "six hundred twenty-eight million, four hundred forty-six thousand, seven hundred eighty-seven".