40582681 has 4 divisors (see below), whose sum is σ = 40597200. Its totient is φ = 40568164.

The previous prime is 40582643. The next prime is 40582697. The reversal of 40582681 is 18628504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40582681 - 2²¹ = 38485529 is a prime.

It is a super-2 number, since 2×40582681² = 3293907994295522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40582631) 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, 1591 + ... + 9148.

It is an arithmetic number, because the mean of its divisors is an integer number (10149300).

Almost surely, 2^40582681 is an apocalyptic number.

It is an amenable number.

40582681 is a deficient number, since it is larger than the sum of its proper divisors (14519).

40582681 is a wasteful number, since it uses less digits than its factorization.

40582681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14518.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 40582681 is about 6370.4537515000. The cubic root of 40582681 is about 343.6478080360.

The spelling of 40582681 in words is "forty million, five hundred eighty-two thousand, six hundred eighty-one".