43661146 has 8 divisors (see below), whose sum is σ = 67089204. Its totient is φ = 21298080.

The previous prime is 43661141. The next prime is 43661161. The reversal of 43661146 is 64116634.

It can be written as a sum of positive squares in 2 ways, for example, as 40182921 + 3478225 = 6339^2 + 1865^2 .

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

It is not an unprimeable number, because it can be changed into a prime (43661141) 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, 266145 + ... + 266308.

Almost surely, 2^43661146 is an apocalyptic number.

43661146 is a deficient number, since it is larger than the sum of its proper divisors (23428058).

43661146 is a wasteful number, since it uses less digits than its factorization.

43661146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532496.

The product of its digits is 10368, while the sum is 31.

The square root of 43661146 is about 6607.6581328032. The cubic root of 43661146 is about 352.1262299084.

The spelling of 43661146 in words is "forty-three million, six hundred sixty-one thousand, one hundred forty-six".