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869660966087 = 7332803363173
BaseRepresentation
bin11001010011110111101…
…01010011110011000111
310002010202011112110202122
430221323311103303013
5103222031201403322
61503303340400155
7116555003146424
oct14517365236307
93063664473678
10869660966087
11305903a41651
1212066784605b
13640160aa334
143013dd26d4b
151794dc83442
hexca7bd53cc7

869660966087 has 8 divisors (see below), whose sum is σ = 881603432304. Its totient is φ = 857719291968.

The previous prime is 869660966077. The next prime is 869660966101. The reversal of 869660966087 is 780669066968.

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

It is a cyclic number.

It is not a de Polignac number, because 869660966087 - 212 = 869660961991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 869660966087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869660966077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2213033 + ... + 2576205.

It is an arithmetic number, because the mean of its divisors is an integer number (110200429038).

Almost surely, 2869660966087 is an apocalyptic number.

869660966087 is a deficient number, since it is larger than the sum of its proper divisors (11942466217).

869660966087 is a wasteful number, since it uses less digits than its factorization.

869660966087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396049.

The product of its (nonzero) digits is 282175488, while the sum is 71.

The spelling of 869660966087 in words is "eight hundred sixty-nine billion, six hundred sixty million, nine hundred sixty-six thousand, eighty-seven".

Divisors: 1 73 32803 363173 2394619 26511629 11913163919 869660966087