Search a number
-
+
68204837 = 434873257
BaseRepresentation
bin1000001000010…
…11100100100101
311202100011110002
410010023210211
5114430023322
610433511045
71455505631
oct404134445
9152304402
1068204837
1135555338
121aa12485
13111906bc
1490b5dc1
155ec3c92
hex410b925

68204837 has 8 divisors (see below), whose sum is σ = 69955776. Its totient is φ = 66461472.

The previous prime is 68204831. The next prime is 68204863. The reversal of 68204837 is 73840286.

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 68204837 - 28 = 68204581 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 68204837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68204831) 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, 19313 + ... + 22569.

It is an arithmetic number, because the mean of its divisors is an integer number (8744472).

Almost surely, 268204837 is an apocalyptic number.

It is an amenable number.

68204837 is a deficient number, since it is larger than the sum of its proper divisors (1750939).

68204837 is a wasteful number, since it uses less digits than its factorization.

68204837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 68204837 is about 8258.6219794830. The cubic root of 68204837 is about 408.5749395466.

The spelling of 68204837 in words is "sixty-eight million, two hundred four thousand, eight hundred thirty-seven".

Divisors: 1 43 487 3257 20941 140051 1586159 68204837