43560661 has 4 divisors (see below), whose sum is σ = 43588000. Its totient is φ = 43533324.

The previous prime is 43560659. The next prime is 43560691. The reversal of 43560661 is 16606534.

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 43560661 - 2¹ = 43560659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43560691) 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, 11121 + ... + 14518.

It is an arithmetic number, because the mean of its divisors is an integer number (10897000).

Almost surely, 2^43560661 is an apocalyptic number.

It is an amenable number.

43560661 is a deficient number, since it is larger than the sum of its proper divisors (27339).

43560661 is a wasteful number, since it uses less digits than its factorization.

43560661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27338.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 43560661 is about 6600.0500755676. The cubic root of 43560661 is about 351.8558859307.

The spelling of 43560661 in words is "forty-three million, five hundred sixty thousand, six hundred sixty-one".