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679979133 = 32105171887
BaseRepresentation
bin101000100001111…
…010100001111101
31202101111112000100
4220201322201331
52343033313013
6151250151313
722564504311
oct5041724175
91671445010
10679979133
11319915429
1216b882539
13aab4c622
1466445b41
153ea6a473
hex2887a87d

679979133 has 12 divisors (see below), whose sum is σ = 983140288. Its totient is φ = 452881800.

The previous prime is 679979129. The next prime is 679979143. The reversal of 679979133 is 331979976.

679979133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 679979133 - 22 = 679979129 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 679979133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679979143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26485 + ... + 45402.

Almost surely, 2679979133 is an apocalyptic number.

It is an amenable number.

679979133 is a deficient number, since it is larger than the sum of its proper divisors (303161155).

679979133 is a wasteful number, since it uses less digits than its factorization.

679979133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72944 (or 72941 counting only the distinct ones).

The product of its digits is 1928934, while the sum is 54.

The square root of 679979133 is about 26076.4095112805. The cubic root of 679979133 is about 879.3569393745.

The spelling of 679979133 in words is "six hundred seventy-nine million, nine hundred seventy-nine thousand, one hundred thirty-three".

Divisors: 1 3 9 1051 3153 9459 71887 215661 646983 75553237 226659711 679979133