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74861 is a prime number
BaseRepresentation
bin10010010001101101
310210200122
4102101231
54343421
61334325
7431153
oct222155
9123618
1074861
1151276
12373a5
13280c7
141d3d3
15172ab
hex1246d

74861 has 2 divisors, whose sum is σ = 74862. Its totient is φ = 74860.

The previous prime is 74857. The next prime is 74869. The reversal of 74861 is 16847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72361 + 2500 = 269^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 74861 - 22 = 74857 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 74861.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74861.

It is not a weakly prime, because it can be changed into another prime (74869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37430 + 37431.

It is an arithmetic number, because the mean of its divisors is an integer number (37431).

274861 is an apocalyptic number.

It is an amenable number.

74861 is a deficient number, since it is larger than the sum of its proper divisors (1).

74861 is an equidigital number, since it uses as much as digits as its factorization.

74861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 74861 is about 273.6073829413. The cubic root of 74861 is about 42.1455644558.

The spelling of 74861 in words is "seventy-four thousand, eight hundred sixty-one".