61683841 has 4 divisors (see below), whose sum is σ = 63810900. Its totient is φ = 59556784.

The previous prime is 61683829. The next prime is 61683883. The reversal of 61683841 is 14838616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26625600 + 35058241 = 5160^2 + 5921^2 .

It is a cyclic number.

It is not a de Polignac number, because 61683841 - 2²³ = 53295233 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 61683841.

It is not an unprimeable number, because it can be changed into a prime (61683821) 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, 1063486 + ... + 1063543.

It is an arithmetic number, because the mean of its divisors is an integer number (15952725).

Almost surely, 2^61683841 is an apocalyptic number.

It is an amenable number.

61683841 is a deficient number, since it is larger than the sum of its proper divisors (2127059).

61683841 is a wasteful number, since it uses less digits than its factorization.

61683841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127058.

The product of its digits is 27648, while the sum is 37.

The square root of 61683841 is about 7853.9060982418. The cubic root of 61683841 is about 395.1152598535.

The spelling of 61683841 in words is "sixty-one million, six hundred eighty-three thousand, eight hundred forty-one".