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68825833 = 233329501
BaseRepresentation
bin1000001101000…
…11001011101001
311210111201021221
410012203023221
5120104411313
610455102041
71464003256
oct406431351
9153451257
1068825833
113593995a
121b071921
131134a25b
1491d842d
156097c8d
hex41a32e9

68825833 has 4 divisors (see below), whose sum is σ = 68857668. Its totient is φ = 68794000.

The previous prime is 68825831. The next prime is 68825837. The reversal of 68825833 is 33852886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25371369 + 43454464 = 5037^2 + 6592^2 .

It is a cyclic number.

It is not a de Polignac number, because 68825833 - 21 = 68825831 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 68825833.

It is not an unprimeable number, because it can be changed into a prime (68825831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12418 + ... + 17083.

It is an arithmetic number, because the mean of its divisors is an integer number (17214417).

Almost surely, 268825833 is an apocalyptic number.

It is an amenable number.

68825833 is a deficient number, since it is larger than the sum of its proper divisors (31835).

68825833 is a wasteful number, since it uses less digits than its factorization.

68825833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31834.

The product of its digits is 276480, while the sum is 43.

The square root of 68825833 is about 8296.1336175353. The cubic root of 68825833 is about 409.8112019904.

The spelling of 68825833 in words is "sixty-eight million, eight hundred twenty-five thousand, eight hundred thirty-three".

Divisors: 1 2333 29501 68825833