43686461 has 8 divisors (see below), whose sum is σ = 53768064. Its totient is φ = 34565040.

The previous prime is 43686457. The next prime is 43686463. The reversal of 43686461 is 16468634.

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

It is a cyclic number.

It is not a de Polignac number, because 43686461 - 2² = 43686457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43686463) 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, 239945 + ... + 240126.

It is an arithmetic number, because the mean of its divisors is an integer number (6721008).

Almost surely, 2^43686461 is an apocalyptic number.

It is an amenable number.

43686461 is a deficient number, since it is larger than the sum of its proper divisors (10081603).

43686461 is a wasteful number, since it uses less digits than its factorization.

43686461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480091.

The product of its digits is 82944, while the sum is 38.

The square root of 43686461 is about 6609.5734355554. The cubic root of 43686461 is about 352.1942717417.

The spelling of 43686461 in words is "forty-three million, six hundred eighty-six thousand, four hundred sixty-one".