628722049 has 8 divisors (see below), whose sum is σ = 649360800. Its totient is φ = 608356896.

The previous prime is 628722023. The next prime is 628722079. The reversal of 628722049 is 940227826.

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 628722049 - 2¹⁹ = 628197761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628722079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63724 + ... + 72925.

It is an arithmetic number, because the mean of its divisors is an integer number (81170100).

Almost surely, 2^628722049 is an apocalyptic number.

It is an amenable number.

628722049 is a deficient number, since it is larger than the sum of its proper divisors (20638751).

628722049 is a wasteful number, since it uses less digits than its factorization.

628722049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136799.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 628722049 is about 25074.3304795961. The cubic root of 628722049 is about 856.6818457511.

The spelling of 628722049 in words is "six hundred twenty-eight million, seven hundred twenty-two thousand, forty-nine".