61543874 has 16 divisors (see below), whose sum is σ = 105608448. Its totient is φ = 26349792.

The previous prime is 61543873. The next prime is 61543877. The reversal of 61543874 is 47834516.

61543874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61543871) 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 in 7 ways as a sum of consecutive naturals, for example, 20774 + ... + 23550.

It is an arithmetic number, because the mean of its divisors is an integer number (6600528).

Almost surely, 2^61543874 is an apocalyptic number.

61543874 is a deficient number, since it is larger than the sum of its proper divisors (44064574).

61543874 is a wasteful number, since it uses less digits than its factorization.

61543874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369.

The product of its digits is 80640, while the sum is 38.

The square root of 61543874 is about 7844.9903760298. The cubic root of 61543874 is about 394.8161810944.

The spelling of 61543874 in words is "sixty-one million, five hundred forty-three thousand, eight hundred seventy-four".