61843393 has 4 divisors (see below), whose sum is σ = 62005248. Its totient is φ = 61681540.

The previous prime is 61843367. The next prime is 61843403. The reversal of 61843393 is 39334816.

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 61843393 - 2⁵ = 61843361 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80353 + ... + 81118.

It is an arithmetic number, because the mean of its divisors is an integer number (15501312).

Almost surely, 2^61843393 is an apocalyptic number.

It is an amenable number.

61843393 is a deficient number, since it is larger than the sum of its proper divisors (161855).

61843393 is a wasteful number, since it uses less digits than its factorization.

61843393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161854.

The product of its digits is 46656, while the sum is 37.

The square root of 61843393 is about 7864.0570318380. The cubic root of 61843393 is about 395.4556361572.

The spelling of 61843393 in words is "sixty-one million, eight hundred forty-three thousand, three hundred ninety-three".