61288998 has 16 divisors (see below), whose sum is σ = 122757120. Its totient is φ = 20399816.

The previous prime is 61288963. The next prime is 61288999. The reversal of 61288998 is 89988216.

61288998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61288998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61288999) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2790 + ... + 11417.

It is an arithmetic number, because the mean of its divisors is an integer number (7672320).

Almost surely, 2^61288998 is an apocalyptic number.

61288998 is an abundant number, since it is smaller than the sum of its proper divisors (61468122).

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

61288998 is a wasteful number, since it uses less digits than its factorization.

61288998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14931.

The product of its digits is 497664, while the sum is 51.

The square root of 61288998 is about 7828.7290156193. The cubic root of 61288998 is about 394.2704002439.

The spelling of 61288998 in words is "sixty-one million, two hundred eighty-eight thousand, nine hundred ninety-eight".