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689512877386 = 2734722690941
BaseRepresentation
bin10100000100010100010…
…10111000110101001010
32102220202100010101000021
422002022022320311022
542244110244034021
61244431405531054
7100546525520014
oct12021212706512
92386670111007
10689512877386
1124646a053213
12b1770573a8a
1350036885b48
14255305bd1b4
1512e08576c41
hexa08a2b8d4a

689512877386 has 8 divisors (see below), whose sum is σ = 1048437389124. Its totient is φ = 340033747680.

The previous prime is 689512877281. The next prime is 689512877387. The reversal of 689512877386 is 683778215986.

It can be written as a sum of positive squares in 2 ways, for example, as 656545575625 + 32967301761 = 810275^2 + 181569^2 .

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

It is a super-2 number, since 2×6895128773862 (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689512877387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2361345325 + ... + 2361345616.

Almost surely, 2689512877386 is an apocalyptic number.

689512877386 is a deficient number, since it is larger than the sum of its proper divisors (358924511738).

689512877386 is a wasteful number, since it uses less digits than its factorization.

689512877386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722691016.

The product of its digits is 243855360, while the sum is 70.

The spelling of 689512877386 in words is "six hundred eighty-nine billion, five hundred twelve million, eight hundred seventy-seven thousand, three hundred eighty-six".

Divisors: 1 2 73 146 4722690941 9445381882 344756438693 689512877386