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74897 is a prime number
BaseRepresentation
bin10010010010010001
310210201222
4102102101
54344042
61334425
7431234
oct222221
9123658
1074897
11512a9
1237415
1328124
141d41b
15172d2
hex12491

74897 has 2 divisors, whose sum is σ = 74898. Its totient is φ = 74896.

The previous prime is 74891. The next prime is 74903. The reversal of 74897 is 79847.

It is a balanced prime because it is at equal distance from previous prime (74891) and next prime (74903).

It can be written as a sum of positive squares in only one way, i.e., 38416 + 36481 = 196^2 + 191^2 .

It is an emirp because it is prime and its reverse (79847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-74897 is a prime.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (74891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37448 + 37449.

It is an arithmetic number, because the mean of its divisors is an integer number (37449).

74897 is a Friedman number, since it can be written as (8^7/4-9)/7, using all its digits and the basic arithmetic operations.

274897 is an apocalyptic number.

It is an amenable number.

74897 is a deficient number, since it is larger than the sum of its proper divisors (1).

74897 is an equidigital number, since it uses as much as digits as its factorization.

74897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 74897 is about 273.6731627325. The cubic root of 74897 is about 42.1523191843.

Subtracting 74897 from its reverse (79847), we obtain a triangular number (4950 = T99).

The spelling of 74897 in words is "seventy-four thousand, eight hundred ninety-seven".