61368538 has 48 divisors (see below), whose sum is σ = 122496192. Its totient is φ = 22492800.

The previous prime is 61368529. The next prime is 61368547. The reversal of 61368538 is 83586316.

61368538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61368529) and next prime (61368547).

It is a self number, because there is not a number n which added to its sum of digits gives 61368538.

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, 27733 + ... + 29863.

It is an arithmetic number, because the mean of its divisors is an integer number (2552004).

Almost surely, 2^61368538 is an apocalyptic number.

61368538 is a deficient number, since it is larger than the sum of its proper divisors (61127654).

61368538 is a wasteful number, since it uses less digits than its factorization.

61368538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2168 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 61368538 is about 7833.8073757273. The cubic root of 61368538 is about 394.4408860414.

The spelling of 61368538 in words is "sixty-one million, three hundred sixty-eight thousand, five hundred thirty-eight".