61188867 has 6 divisors (see below), whose sum is σ = 88383932. Its totient is φ = 40792572.

The previous prime is 61188863. The next prime is 61188887. The reversal of 61188867 is 76888116.

61188867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61188867 - 2² = 61188863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61188863) 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 5 ways as a sum of consecutive naturals, for example, 3399373 + ... + 3399390.

Almost surely, 2^61188867 is an apocalyptic number.

61188867 is a deficient number, since it is larger than the sum of its proper divisors (27195065).

61188867 is a wasteful number, since it uses less digits than its factorization.

61188867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798769 (or 6798766 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 61188867 is about 7822.3313021119. The cubic root of 61188867 is about 394.0555699060.

The spelling of 61188867 in words is "sixty-one million, one hundred eighty-eight thousand, eight hundred sixty-seven".