61984543 has 8 divisors (see below), whose sum is σ = 63531776. Its totient is φ = 60442200.

The previous prime is 61984537. The next prime is 61984547. The reversal of 61984543 is 34548916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61984543 - 2¹³ = 61976351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61984496 and 61984505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61984547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49738 + ... + 50968.

It is an arithmetic number, because the mean of its divisors is an integer number (7941472).

Almost surely, 2^61984543 is an apocalyptic number.

61984543 is a deficient number, since it is larger than the sum of its proper divisors (1547233).

61984543 is a wasteful number, since it uses less digits than its factorization.

61984543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445.

The product of its digits is 103680, while the sum is 40.

The square root of 61984543 is about 7873.0262923478. The cubic root of 61984543 is about 395.7562673039.

The spelling of 61984543 in words is "sixty-one million, nine hundred eighty-four thousand, five hundred forty-three".