43687485 has 32 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 22494528.

The previous prime is 43687477. The next prime is 43687489. The reversal of 43687485 is 58478634.

It is not a de Polignac number, because 43687485 - 2³ = 43687477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43687485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43687489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1665 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (2511000).

Almost surely, 2^43687485 is an apocalyptic number.

43687485 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43687485 is a deficient number, since it is larger than the sum of its proper divisors (36664515).

43687485 is a wasteful number, since it uses less digits than its factorization.

43687485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11202 (or 11196 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 43687485 is about 6609.6508984968. The cubic root of 43687485 is about 352.1970235028.

The spelling of 43687485 in words is "forty-three million, six hundred eighty-seven thousand, four hundred eighty-five".