628701380849 has 4 divisors (see below), whose sum is σ = 628708693236. Its totient is φ = 628694068464.

The previous prime is 628701380719. The next prime is 628701380891. The reversal of 628701380849 is 948083107826.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 401267770849 + 227433610000 = 633457^2 + 476900^2 .

It is a cyclic number.

It is not a de Polignac number, because 628701380849 - 2³⁶ = 559981904113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628701380794 and 628701380803.

It is not an unprimeable number, because it can be changed into a prime (628701580849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3525674 + ... + 3699699.

It is an arithmetic number, because the mean of its divisors is an integer number (157177173309).

Almost surely, 2^628701380849 is an apocalyptic number.

It is an amenable number.

628701380849 is a deficient number, since it is larger than the sum of its proper divisors (7312387).

628701380849 is an equidigital number, since it uses as much as digits as its factorization.

628701380849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312386.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 628701380849 in words is "six hundred twenty-eight billion, seven hundred one million, three hundred eighty thousand, eight hundred forty-nine".