61967543 has 16 divisors (see below), whose sum is σ = 72824832. Its totient is φ = 52140000.

The previous prime is 61967539. The next prime is 61967561. The reversal of 61967543 is 34576916.

It is not a de Polignac number, because 61967543 - 2² = 61967539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61967543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61967513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3893 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (4551552).

Almost surely, 2^61967543 is an apocalyptic number.

61967543 is a deficient number, since it is larger than the sum of its proper divisors (10857289).

61967543 is a wasteful number, since it uses less digits than its factorization.

61967543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966.

The product of its digits is 136080, while the sum is 41.

The square root of 61967543 is about 7871.9465826440. The cubic root of 61967543 is about 395.7200837041.

The spelling of 61967543 in words is "sixty-one million, nine hundred sixty-seven thousand, five hundred forty-three".