61568898 has 8 divisors (see below), whose sum is σ = 123137808. Its totient is φ = 20522964.

The previous prime is 61568879. The next prime is 61568909. The reversal of 61568898 is 89886516.

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

61568898 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 61568898.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5130736 + ... + 5130747.

It is an arithmetic number, because the mean of its divisors is an integer number (15392226).

Almost surely, 2^61568898 is an apocalyptic number.

61568898 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.

61568898 is a wasteful number, since it uses less digits than its factorization.

61568898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261488.

The product of its digits is 829440, while the sum is 51.

The square root of 61568898 is about 7846.5851171067. The cubic root of 61568898 is about 394.8696851543.

The spelling of 61568898 in words is "sixty-one million, five hundred sixty-eight thousand, eight hundred ninety-eight".