43680465 has 24 divisors (see below), whose sum is σ = 78519168. Its totient is φ = 23295600.

The previous prime is 43680451. The next prime is 43680479. The reversal of 43680465 is 56408634.

It is an interprime number because it is at equal distance from previous prime (43680451) and next prime (43680479).

It is not a de Polignac number, because 43680465 - 2¹⁶ = 43614929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16761 + ... + 19190.

It is an arithmetic number, because the mean of its divisors is an integer number (3271632).

Almost surely, 2^43680465 is an apocalyptic number.

43680465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43680465 is a deficient number, since it is larger than the sum of its proper divisors (34838703).

43680465 is an equidigital number, since it uses as much as digits as its factorization.

43680465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35971 (or 35959 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 43680465 is about 6609.1198355000. The cubic root of 43680465 is about 352.1781580272.

The spelling of 43680465 in words is "forty-three million, six hundred eighty thousand, four hundred sixty-five".