Search a number
-
+
68088705 = 354539247
BaseRepresentation
bin1000000111011…
…11001110000001
311202010021010220
410003233032001
5114412314310
610431213253
71454513226
oct403571601
9152107126
1068088705
1135486063
121a977229
131114c899
14908594d
155e9e670
hex40ef381

68088705 has 8 divisors (see below), whose sum is σ = 108941952. Its totient is φ = 36313968.

The previous prime is 68088697. The next prime is 68088707. The reversal of 68088705 is 50788086.

It is a happy number.

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

It is not a de Polignac number, because 68088705 - 23 = 68088697 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68088707) 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, 2269609 + ... + 2269638.

It is an arithmetic number, because the mean of its divisors is an integer number (13617744).

Almost surely, 268088705 is an apocalyptic number.

It is an amenable number.

68088705 is a deficient number, since it is larger than the sum of its proper divisors (40853247).

68088705 is a wasteful number, since it uses less digits than its factorization.

68088705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539255.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 68088705 is about 8251.5880289796. The cubic root of 68088705 is about 408.3429150419.

The spelling of 68088705 in words is "sixty-eight million, eighty-eight thousand, seven hundred five".

Divisors: 1 3 5 15 4539247 13617741 22696235 68088705