628790319369 has 63 divisors (see below), whose sum is σ = 966603828477. Its totient is φ = 408845379096.

The previous prime is 628790319361. The next prime is 628790319401. The reversal of 628790319369 is 963913097826.

The square root of 628790319369 is 792963.

It is a perfect power (a square), and thus also a powerful number.

628790319369 is a `hidden beast` number, since 6 + 287 + 9 + 0 + 319 + 36 + 9 = 666.

It is not a de Polignac number, because 628790319369 - 2³ = 628790319361 is a prime.

It is a super-2 number, since 2×628790319369² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628790319361) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 920629702 + ... + 920630384.

Almost surely, 2^628790319369 is an apocalyptic number.

628790319369 is the 792963-rd square number.

628790319369 is the 396482-nd centered octagonal number.

It is an amenable number.

628790319369 is a deficient number, since it is larger than the sum of its proper divisors (337813509108).

628790319369 is an frugal number, since it uses more digits than its factorization.

628790319369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 628790319369 in words is "six hundred twenty-eight billion, seven hundred ninety million, three hundred nineteen thousand, three hundred sixty-nine".