61843443 has 8 divisors (see below), whose sum is σ = 82556928. Its totient is φ = 41179464.

The previous prime is 61843427. The next prime is 61843451. The reversal of 61843443 is 34434816.

It is a happy number.

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

It is not a de Polignac number, because 61843443 - 2⁴ = 61843427 is a prime.

It is a super-2 number, since 2×61843443² = 7649222884188498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61843403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9355 + ... + 14532.

It is an arithmetic number, because the mean of its divisors is an integer number (10319616).

Almost surely, 2^61843443 is an apocalyptic number.

61843443 is a deficient number, since it is larger than the sum of its proper divisors (20713485).

61843443 is a wasteful number, since it uses less digits than its factorization.

61843443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24753.

The product of its digits is 27648, while the sum is 33.

The square root of 61843443 is about 7864.0602108580. The cubic root of 61843443 is about 395.4557427317.

The spelling of 61843443 in words is "sixty-one million, eight hundred forty-three thousand, four hundred forty-three".