Search a number
-
+
68688097 = 1923157181
BaseRepresentation
bin1000001100000…
…01100011100001
311210020201100121
410012001203201
5120041004342
610452120241
71462560562
oct406014341
9153221317
1068688097
1135855425
121b006081
13112cc65a
1491a0169
15606c067
hex41818e1

68688097 has 8 divisors (see below), whose sum is σ = 75447360. Its totient is φ = 62243280.

The previous prime is 68688049. The next prime is 68688107. The reversal of 68688097 is 79088686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68688097 - 215 = 68655329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68688047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78154 + ... + 79027.

It is an arithmetic number, because the mean of its divisors is an integer number (9430920).

Almost surely, 268688097 is an apocalyptic number.

It is an amenable number.

68688097 is a deficient number, since it is larger than the sum of its proper divisors (6759263).

68688097 is a wasteful number, since it uses less digits than its factorization.

68688097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157223.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 68688097 is about 8287.8282438767. The cubic root of 68688097 is about 409.5376445739.

The spelling of 68688097 in words is "sixty-eight million, six hundred eighty-eight thousand, ninety-seven".

Divisors: 1 19 23 437 157181 2986439 3615163 68688097