Search a number
-
+
68244071 = 779123407
BaseRepresentation
bin1000001000101…
…01001001100111
311202102011021012
410010111021213
5114432302241
610434412435
71456031210
oct404251147
9152364235
1068244071
1135581865
121aa3111b
13111a550c
1490c6407
155ed06eb
hex4115267

68244071 has 8 divisors (see below), whose sum is σ = 78981120. Its totient is φ = 57754008.

The previous prime is 68244031. The next prime is 68244079. The reversal of 68244071 is 17044286.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68244071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68244079) 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 7 ways as a sum of consecutive naturals, for example, 61151 + ... + 62256.

It is an arithmetic number, because the mean of its divisors is an integer number (9872640).

Almost surely, 268244071 is an apocalyptic number.

68244071 is a deficient number, since it is larger than the sum of its proper divisors (10737049).

68244071 is a wasteful number, since it uses less digits than its factorization.

68244071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123493.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 68244071 is about 8260.9969737314. The cubic root of 68244071 is about 408.6532671118.

The spelling of 68244071 in words is "sixty-eight million, two hundred forty-four thousand, seventy-one".

Divisors: 1 7 79 553 123407 863849 9749153 68244071