61389898 has 8 divisors (see below), whose sum is σ = 96088608. Its totient is φ = 29360364.

The previous prime is 61389863. The next prime is 61389929. The reversal of 61389898 is 89898316.

61389898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667236 + ... + 667327.

It is an arithmetic number, because the mean of its divisors is an integer number (12011076).

Almost surely, 2^61389898 is an apocalyptic number.

61389898 is a deficient number, since it is larger than the sum of its proper divisors (34698710).

61389898 is a wasteful number, since it uses less digits than its factorization.

61389898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334588.

The product of its digits is 746496, while the sum is 52.

The square root of 61389898 is about 7835.1705788706. The cubic root of 61389898 is about 394.4866439073.

The spelling of 61389898 in words is "sixty-one million, three hundred eighty-nine thousand, eight hundred ninety-eight".