Search a number
-
+
68275873 = 1943193433
BaseRepresentation
bin1000001000111…
…00111010100001
311202110202220001
410010130322201
5114434311443
610435220001
71456223011
oct404347241
9152422801
1068275873
11355a3746
121aa47601
13111b6b33
1490d3c41
155ed9d4d
hex411cea1

68275873 has 16 divisors (see below), whose sum is σ = 74092480. Its totient is φ = 62705664.

The previous prime is 68275861. The next prime is 68275877. The reversal of 68275873 is 37857286.

It is a 3-Lehmer number, since φ(68275873) divides (68275873-1)3.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68275873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68275877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157465 + ... + 157897.

It is an arithmetic number, because the mean of its divisors is an integer number (4630780).

It is a Poulet number, since it divides 268275872-1.

Almost surely, 268275873 is an apocalyptic number.

It is an amenable number.

68275873 is a deficient number, since it is larger than the sum of its proper divisors (5816607).

68275873 is a wasteful number, since it uses less digits than its factorization.

68275873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its digits is 564480, while the sum is 46.

The square root of 68275873 is about 8262.9215777472. The cubic root of 68275873 is about 408.7167352530.

The spelling of 68275873 in words is "sixty-eight million, two hundred seventy-five thousand, eight hundred seventy-three".

Divisors: 1 19 43 193 433 817 3667 8227 8299 18619 83569 157681 353761 1587811 3593467 68275873