61225668 has 72 divisors (see below), whose sum is σ = 178156160. Its totient is φ = 17366400.

The previous prime is 61225613. The next prime is 61225693. The reversal of 61225668 is 86652216.

61225668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 37248 + ... + 38856.

Almost surely, 2^61225668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61225668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89078080).

61225668 is an abundant number, since it is smaller than the sum of its proper divisors (116930492).

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

61225668 is a wasteful number, since it uses less digits than its factorization.

61225668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1772 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 61225668 is about 7824.6832523751. The cubic root of 61225668 is about 394.1345534066.

The spelling of 61225668 in words is "sixty-one million, two hundred twenty-five thousand, six hundred sixty-eight".