61338285 has 24 divisors (see below), whose sum is σ = 107321760. Its totient is φ = 32405472.

The previous prime is 61338283. The next prime is 61338317. The reversal of 61338285 is 58283316.

61338285 is a `hidden beast` number, since 613 + 38 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 61338285 - 2¹ = 61338283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61338281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1555 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (4471740).

Almost surely, 2^61338285 is an apocalyptic number.

It is an amenable number.

61338285 is a deficient number, since it is larger than the sum of its proper divisors (45983475).

61338285 is a wasteful number, since it uses less digits than its factorization.

61338285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857 (or 12854 counting only the distinct ones).

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

The square root of 61338285 is about 7831.8762119942. The cubic root of 61338285 is about 394.3760592211.

The spelling of 61338285 in words is "sixty-one million, three hundred thirty-eight thousand, two hundred eighty-five".