61775843 has 4 divisors (see below), whose sum is σ = 62117328. Its totient is φ = 61434360.

The previous prime is 61775797. The next prime is 61775849. The reversal of 61775843 is 34857716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61775843 - 2¹⁰ = 61774819 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 61775843.

It is not an unprimeable number, because it can be changed into a prime (61775849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170471 + ... + 170832.

It is an arithmetic number, because the mean of its divisors is an integer number (15529332).

Almost surely, 2^61775843 is an apocalyptic number.

61775843 is a deficient number, since it is larger than the sum of its proper divisors (341485).

61775843 is a wasteful number, since it uses less digits than its factorization.

61775843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341484.

The product of its digits is 141120, while the sum is 41.

The square root of 61775843 is about 7859.7610014555. The cubic root of 61775843 is about 395.3116015842.

The spelling of 61775843 in words is "sixty-one million, seven hundred seventy-five thousand, eight hundred forty-three".