628764934319 has 16 divisors (see below), whose sum is σ = 681280804512. Its totient is φ = 577976491008.

The previous prime is 628764934271. The next prime is 628764934321. The reversal of 628764934319 is 913439467826.

It is a cyclic number.

It is not a de Polignac number, because 628764934319 - 2³⁶ = 560045457583 is a prime.

It is a super-2 number, since 2×628764934319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628764934379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18106337 + ... + 18141029.

It is an arithmetic number, because the mean of its divisors is an integer number (42580050282).

Almost surely, 2^628764934319 is an apocalyptic number.

628764934319 is a deficient number, since it is larger than the sum of its proper divisors (52515870193).

628764934319 is a wasteful number, since it uses less digits than its factorization.

628764934319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59546.

The product of its digits is 47029248, while the sum is 62.

The spelling of 628764934319 in words is "six hundred twenty-eight billion, seven hundred sixty-four million, nine hundred thirty-four thousand, three hundred nineteen".