689738254569 has 48 divisors (see below), whose sum is σ = 1246984502400. Its totient is φ = 357651548928.

The previous prime is 689738254559. The next prime is 689738254577. The reversal of 689738254569 is 965452837986.

It is a happy number.

689738254569 is a `hidden beast` number, since 6 + 8 + 9 + 7 + 3 + 8 + 2 + 54 + 569 = 666.

It is not a de Polignac number, because 689738254569 - 2¹⁵ = 689738221801 is a prime.

It is a super-2 number, since 2×689738254569² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689738254497 and 689738254506.

It is not an unprimeable number, because it can be changed into a prime (689738254559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7088724 + ... + 7185365.

It is an arithmetic number, because the mean of its divisors is an integer number (25978843800).

Almost surely, 2^689738254569 is an apocalyptic number.

It is an amenable number.

689738254569 is a deficient number, since it is larger than the sum of its proper divisors (557246247831).

689738254569 is a wasteful number, since it uses less digits than its factorization.

689738254569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14274174 (or 14274171 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 72.

The spelling of 689738254569 in words is "six hundred eighty-nine billion, seven hundred thirty-eight million, two hundred fifty-four thousand, five hundred sixty-nine".