61938886 has 4 divisors (see below), whose sum is σ = 92908332. Its totient is φ = 30969442.

The previous prime is 61938883. The next prime is 61938893. The reversal of 61938886 is 68883916.

61938886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61938881) 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 as a sum of consecutive naturals, namely, 15484720 + ... + 15484723.

It is an arithmetic number, because the mean of its divisors is an integer number (23227083).

Almost surely, 2^61938886 is an apocalyptic number.

61938886 is a deficient number, since it is larger than the sum of its proper divisors (30969446).

61938886 is a wasteful number, since it uses less digits than its factorization.

61938886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30969445.

The product of its digits is 497664, while the sum is 49.

The square root of 61938886 is about 7870.1261743380. The cubic root of 61938886 is about 395.6590738139.

The spelling of 61938886 in words is "sixty-one million, nine hundred thirty-eight thousand, eight hundred eighty-six".