628686799643 has 8 divisors (see below), whose sum is σ = 718530489600. Its totient is φ = 538850932200.

The previous prime is 628686799619. The next prime is 628686799649. The reversal of 628686799643 is 346997686826.

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

It is not a de Polignac number, because 628686799643 - 2²² = 628682605339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628686799649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782383 + ... + 2105768.

It is an arithmetic number, because the mean of its divisors is an integer number (89816311200).

Almost surely, 2^628686799643 is an apocalyptic number.

628686799643 is a deficient number, since it is larger than the sum of its proper divisors (89843689957).

628686799643 is a wasteful number, since it uses less digits than its factorization.

628686799643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911257.

The product of its digits is 1128701952, while the sum is 74.

The spelling of 628686799643 in words is "six hundred twenty-eight billion, six hundred eighty-six million, seven hundred ninety-nine thousand, six hundred forty-three".