61543364 has 6 divisors (see below), whose sum is σ = 107700894. Its totient is φ = 30771680.

The previous prime is 61543333. The next prime is 61543367. The reversal of 61543364 is 46334516.

61543364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 828100 = 7792^2 + 910^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61543364.

It is not an unprimeable number, because it can be changed into a prime (61543367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7692917 + ... + 7692924.

It is an arithmetic number, because the mean of its divisors is an integer number (17950149).

Almost surely, 2^61543364 is an apocalyptic number.

It is an amenable number.

61543364 is a deficient number, since it is larger than the sum of its proper divisors (46157530).

61543364 is a wasteful number, since it uses less digits than its factorization.

61543364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15385845 (or 15385843 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 61543364 is about 7844.9578711425. The cubic root of 61543364 is about 394.8150905077.

The spelling of 61543364 in words is "sixty-one million, five hundred forty-three thousand, three hundred sixty-four".