61338620 has 24 divisors (see below), whose sum is σ = 147213024. Its totient is φ = 21030336.

The previous prime is 61338581. The next prime is 61338623. The reversal of 61338620 is 2683316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61338623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218927 + ... + 219206.

It is an arithmetic number, because the mean of its divisors is an integer number (6133876).

Almost surely, 2^61338620 is an apocalyptic number.

It is an amenable number.

61338620 is an abundant number, since it is smaller than the sum of its proper divisors (85874404).

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

61338620 is a wasteful number, since it uses less digits than its factorization.

61338620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438149 (or 438147 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 61338620 is about 7831.8975989220. The cubic root of 61338620 is about 394.3767771835.

The spelling of 61338620 in words is "sixty-one million, three hundred thirty-eight thousand, six hundred twenty".