61347638 has 8 divisors (see below), whose sum is σ = 100387080. Its totient is φ = 27885280.

The previous prime is 61347631. The next prime is 61347653. The reversal of 61347638 is 83674316.

61347638 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61347631) 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 3 ways as a sum of consecutive naturals, for example, 1394243 + ... + 1394286.

It is an arithmetic number, because the mean of its divisors is an integer number (12548385).

Almost surely, 2^61347638 is an apocalyptic number.

61347638 is a deficient number, since it is larger than the sum of its proper divisors (39039442).

61347638 is a wasteful number, since it uses less digits than its factorization.

61347638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788542.

The product of its digits is 72576, while the sum is 38.

The square root of 61347638 is about 7832.4733003056. The cubic root of 61347638 is about 394.3961033193.

The spelling of 61347638 in words is "sixty-one million, three hundred forty-seven thousand, six hundred thirty-eight".