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680130237 = 31799113457
BaseRepresentation
bin101000100010011…
…111011010111101
31202101210012021210
4220202133122331
52343103131422
6151253315033
722566003663
oct5042373275
91671705253
10680130237
11319a08a06
1216b935a79
13aaba3337
1466484c33
153ea9a10c
hex2889f6bd

680130237 has 16 divisors (see below), whose sum is σ = 961224192. Its totient is φ = 426286080.

The previous prime is 680130211. The next prime is 680130239. The reversal of 680130237 is 732031086.

It is not a de Polignac number, because 680130237 - 214 = 680113853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680130239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43813 + ... + 57269.

It is an arithmetic number, because the mean of its divisors is an integer number (60076512).

Almost surely, 2680130237 is an apocalyptic number.

It is an amenable number.

680130237 is a deficient number, since it is larger than the sum of its proper divisors (281093955).

680130237 is a wasteful number, since it uses less digits than its factorization.

680130237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14468.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 680130237 is about 26079.3066817352. The cubic root of 680130237 is about 879.4220710348.

The spelling of 680130237 in words is "six hundred eighty million, one hundred thirty thousand, two hundred thirty-seven".

Divisors: 1 3 17 51 991 2973 13457 16847 40371 50541 228769 686307 13335887 40007661 226710079 680130237