61687876 has 12 divisors (see below), whose sum is σ = 110251008. Its totient is φ = 30187592.

The previous prime is 61687819. The next prime is 61687907. The reversal of 61687876 is 67878616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163876 + ... + 164251.

It is an arithmetic number, because the mean of its divisors is an integer number (9187584).

Almost surely, 2^61687876 is an apocalyptic number.

It is an amenable number.

61687876 is a deficient number, since it is larger than the sum of its proper divisors (48563132).

61687876 is a wasteful number, since it uses less digits than its factorization.

61687876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328178 (or 328176 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 61687876 is about 7854.1629725898. The cubic root of 61687876 is about 395.1238750505.

The spelling of 61687876 in words is "sixty-one million, six hundred eighty-seven thousand, eight hundred seventy-six".