61887388 has 24 divisors (see below), whose sum is σ = 114031008. Its totient is φ = 29331456.

The previous prime is 61887383. The next prime is 61887403. The reversal of 61887388 is 88378816.

61887388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61887383) 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 7 ways as a sum of consecutive naturals, for example, 7420 + ... + 13372.

It is an arithmetic number, because the mean of its divisors is an integer number (4751292).

Almost surely, 2^61887388 is an apocalyptic number.

It is an amenable number.

61887388 is a deficient number, since it is larger than the sum of its proper divisors (52143620).

61887388 is a wasteful number, since it uses less digits than its factorization.

61887388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093 (or 6091 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 61887388 is about 7866.8537548374. The cubic root of 61887388 is about 395.5493888115.

The spelling of 61887388 in words is "sixty-one million, eight hundred eighty-seven thousand, three hundred eighty-eight".