Search a number
680382137 = 2971491673
BaseRepresentation
bin101000100011011…
…100111010111001
31202102020222211102
4220203130322321
52343134212022
6151302541145
722601103251
oct5043347271
91672228742
10680382137
1131a070196
1216ba377b5
13aac60ba6
146650c961
153eae9a92
hex288dceb9

680382137 has 16 divisors (see below), whose sum is σ = 716273280. Its totient is φ = 645388800.

The previous prime is 680382133. The next prime is 680382139. The reversal of 680382137 is 731283086.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 680382137 - 22 = 680382133 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 680382137.

It is not an unprimeable number, because it can be changed into a prime (680382133) 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, 1010633 + ... + 1011305.

It is an arithmetic number, because the mean of its divisors is an integer number (44767080).

Almost surely, 2680382137 is an apocalyptic number.

It is an amenable number.

680382137 is a deficient number, since it is larger than the sum of its proper divisors (35891143).

680382137 is a wasteful number, since it uses less digits than its factorization.

680382137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 680382137 is about 26084.1357341968. The cubic root of 680382137 is about 879.5306282220.

The spelling of 680382137 in words is "six hundred eighty million, three hundred eighty-two thousand, one hundred thirty-seven".