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679998 = 231110303
BaseRepresentation
bin10100110000000111110
31021112210010
42212000332
5133224443
622324050
75531334
oct2460076
91245703
10679998
11424990
12289626
131aa687
14139b54
15d6733
hexa603e

679998 has 16 divisors (see below), whose sum is σ = 1483776. Its totient is φ = 206040.

The previous prime is 679993. The next prime is 679999. The reversal of 679998 is 899976.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679998.

It is not an unprimeable number, because it can be changed into a prime (679993) by changing a digit.

679998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5086 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (92736).

2679998 is an apocalyptic number.

679998 is an abundant number, since it is smaller than the sum of its proper divisors (803778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679998 is a wasteful number, since it uses less digits than its factorization.

679998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its digits is 244944, while the sum is 48.

The square root of 679998 is about 824.6199124445. The cubic root of 679998 is about 87.9365072307.

The spelling of 679998 in words is "six hundred seventy-nine thousand, nine hundred ninety-eight".

Divisors: 1 2 3 6 11 22 33 66 10303 20606 30909 61818 113333 226666 339999 679998