Search a number
74465 = 553281
BaseRepresentation
bin10010001011100001
310210010222
4102023201
54340330
61332425
7430046
oct221341
9123128
1074465
1150a46
1237115
1327b81
141d1cd
15170e5
hex122e1

74465 has 8 divisors (see below), whose sum is σ = 91368. Its totient is φ = 58240.

The previous prime is 74453. The next prime is 74471. The reversal of 74465 is 56447.

It can be written as a sum of positive squares in 4 ways, for example, as 18769 + 55696 = 137^2 + 236^2 .

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

It is not a de Polignac number, because 74465 - 24 = 74449 is a prime.

It is a super-3 number, since 3×744653 = 1238733367483875, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125 + ... + 405.

It is an arithmetic number, because the mean of its divisors is an integer number (11421).

It is the magic constant of a 53 × 53 magic square.

274465 is an apocalyptic number.

It is an amenable number.

74465 is a deficient number, since it is larger than the sum of its proper divisors (16903).

74465 is a wasteful number, since it uses less digits than its factorization.

74465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its digits is 3360, while the sum is 26.

The square root of 74465 is about 272.8827587078. The cubic root of 74465 is about 42.0711191121.

The spelling of 74465 in words is "seventy-four thousand, four hundred sixty-five".

Divisors: 1 5 53 265 281 1405 14893 74465