61839798 has 8 divisors (see below), whose sum is σ = 123679608. Its totient is φ = 20613264.

The previous prime is 61839797. The next prime is 61839853. The reversal of 61839798 is 89793816.

It is a sphenic number, since it is the product of 3 distinct primes.

61839798 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61839798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61839797) 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, 5153311 + ... + 5153322.

It is an arithmetic number, because the mean of its divisors is an integer number (15459951).

Almost surely, 2^61839798 is an apocalyptic number.

61839798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61839798 is a wasteful number, since it uses less digits than its factorization.

61839798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306638.

The product of its digits is 653184, while the sum is 51.

The square root of 61839798 is about 7863.8284569286. The cubic root of 61839798 is about 395.4479733039.

The spelling of 61839798 in words is "sixty-one million, eight hundred thirty-nine thousand, seven hundred ninety-eight".