43661364 has 24 divisors (see below), whose sum is σ = 101986080. Its totient is φ = 14538144.

The previous prime is 43661341. The next prime is 43661377. The reversal of 43661364 is 46316634.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 17082 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (4249420).

Almost surely, 2^43661364 is an apocalyptic number.

It is an amenable number.

43661364 is an abundant number, since it is smaller than the sum of its proper divisors (58324716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43661364 is a wasteful number, since it uses less digits than its factorization.

43661364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919 (or 3917 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 43661364 is about 6607.6746287934. The cubic root of 43661364 is about 352.1268159625.

Adding to 43661364 its reverse (46316634), we get a palindrome (89977998).

The spelling of 43661364 in words is "forty-three million, six hundred sixty-one thousand, three hundred sixty-four".