61938107 has 12 divisors (see below), whose sum is σ = 78601176. Its totient is φ = 48263040.

The previous prime is 61938101. The next prime is 61938109. The reversal of 61938107 is 70183916.

It is not a de Polignac number, because 61938107 - 2¹⁴ = 61921723 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61938101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56918 + ... + 57995.

It is an arithmetic number, because the mean of its divisors is an integer number (6550098).

Almost surely, 2^61938107 is an apocalyptic number.

61938107 is a deficient number, since it is larger than the sum of its proper divisors (16663069).

61938107 is a wasteful number, since it uses less digits than its factorization.

61938107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114938 (or 114931 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 61938107 is about 7870.0766832350. The cubic root of 61938107 is about 395.6574150836.

The spelling of 61938107 in words is "sixty-one million, nine hundred thirty-eight thousand, one hundred seven".