61939361 has 16 divisors (see below), whose sum is σ = 68827968. Its totient is φ = 55272000.

The previous prime is 61939357. The next prime is 61939403. The reversal of 61939361 is 16393916.

61939361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61939361 - 2² = 61939357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61939301) 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 15 ways as a sum of consecutive naturals, for example, 218726 + ... + 219008.

It is an arithmetic number, because the mean of its divisors is an integer number (4301748).

Almost surely, 2^61939361 is an apocalyptic number.

It is an amenable number.

61939361 is a deficient number, since it is larger than the sum of its proper divisors (6888607).

61939361 is a wasteful number, since it uses less digits than its factorization.

61939361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592.

The product of its digits is 26244, while the sum is 38.

The square root of 61939361 is about 7870.1563516870. The cubic root of 61939361 is about 395.6600852279.

The spelling of 61939361 in words is "sixty-one million, nine hundred thirty-nine thousand, three hundred sixty-one".