61686876 has 12 divisors (see below), whose sum is σ = 143936072. Its totient is φ = 20562288.

The previous prime is 61686841. The next prime is 61686883. The reversal of 61686876 is 67868616.

61686876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2570275 + ... + 2570298.

Almost surely, 2^61686876 is an apocalyptic number.

It is an amenable number.

61686876 is an abundant number, since it is smaller than the sum of its proper divisors (82249196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61686876 is a wasteful number, since it uses less digits than its factorization.

61686876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140580 (or 5140578 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 61686876 is about 7854.0993118244. The cubic root of 61686876 is about 395.1217399685.

The spelling of 61686876 in words is "sixty-one million, six hundred eighty-six thousand, eight hundred seventy-six".