61843313 has 4 divisors (see below), whose sum is σ = 70678080. Its totient is φ = 53008548.

The previous prime is 61843303. The next prime is 61843321. The reversal of 61843313 is 31334816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61843313 - 2⁸ = 61843057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61843303) 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 3 ways as a sum of consecutive naturals, for example, 4417373 + ... + 4417386.

It is an arithmetic number, because the mean of its divisors is an integer number (17669520).

Almost surely, 2^61843313 is an apocalyptic number.

It is an amenable number.

61843313 is a deficient number, since it is larger than the sum of its proper divisors (8834767).

61843313 is an equidigital number, since it uses as much as digits as its factorization.

61843313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834766.

The product of its digits is 5184, while the sum is 29.

The square root of 61843313 is about 7864.0519454032. The cubic root of 61843313 is about 395.4554656380.

The spelling of 61843313 in words is "sixty-one million, eight hundred forty-three thousand, three hundred thirteen".