74681 has 8 divisors (see below), whose sum is σ = 82944. Its totient is φ = 66880.

The previous prime is 74653. The next prime is 74687. The reversal of 74681 is 18647.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74681 is a prime.

It is a super-2 number, since 2×74681² = 11154503522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 74681.

It is not an unprimeable number, because it can be changed into a prime (74687) 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, 296 + ... + 486.

It is an arithmetic number, because the mean of its divisors is an integer number (10368).

2⁷⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

74681 is a deficient number, since it is larger than the sum of its proper divisors (8263).

74681 is a wasteful number, since it uses less digits than its factorization.

74681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

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

The square root of 74681 is about 273.2782464815. The cubic root of 74681 is about 42.1117582908. Note that the first 3 decimals are identical.

Subtracting from 74681 its product of digits (1344), we obtain a palindrome (73337).

The spelling of 74681 in words is "seventy-four thousand, six hundred eighty-one".