Search a number
-
+
6889101997 = 181193199991
BaseRepresentation
bin1100110101001111…
…10101101010101101
3122210010001122022211
412122213311222231
5103102102230442
63055333210421
7332501254321
oct63247655255
918703048284
106889101997
112a1579a328
121403190a11
1385a347c1b
14494d2d981
152a4c10617
hex19a9f5aad

6889101997 has 16 divisors (see below), whose sum is σ = 7005107200. Its totient is φ = 6774451200.

The previous prime is 6889101983. The next prime is 6889102043. The reversal of 6889101997 is 7991019886.

It is a cyclic number.

It is not a de Polignac number, because 6889101997 - 211 = 6889099949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889101977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6951172 + ... + 6952162.

It is an arithmetic number, because the mean of its divisors is an integer number (437819200).

Almost surely, 26889101997 is an apocalyptic number.

It is an amenable number.

6889101997 is a deficient number, since it is larger than the sum of its proper divisors (116005203).

6889101997 is a wasteful number, since it uses less digits than its factorization.

6889101997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The square root of 6889101997 is about 83000.6144374847. The cubic root of 6889101997 is about 1902.7754448738.

The spelling of 6889101997 in words is "six billion, eight hundred eighty-nine million, one hundred one thousand, nine hundred ninety-seven".

Divisors: 1 181 193 199 991 34933 36019 38407 179371 191263 197209 6951667 34618603 35694829 38061337 6889101997