61471843 has 4 divisors (see below), whose sum is σ = 61512640. Its totient is φ = 61431048.

The previous prime is 61471831. The next prime is 61471873. The reversal of 61471843 is 34817416.

It is a happy number.

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 61471843 - 2⁹ = 61471331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61471799 and 61471808.

It is not an unprimeable number, because it can be changed into a prime (61471873) 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, 18048 + ... + 21181.

It is an arithmetic number, because the mean of its divisors is an integer number (15378160).

Almost surely, 2^61471843 is an apocalyptic number.

61471843 is a deficient number, since it is larger than the sum of its proper divisors (40797).

61471843 is a wasteful number, since it uses less digits than its factorization.

61471843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40796.

The product of its digits is 16128, while the sum is 34.

The square root of 61471843 is about 7840.3981404008. The cubic root of 61471843 is about 394.6620899032.

The spelling of 61471843 in words is "sixty-one million, four hundred seventy-one thousand, eight hundred forty-three".