61866984 has 16 divisors (see below), whose sum is σ = 154667520. Its totient is φ = 20622320.

The previous prime is 61866971. The next prime is 61867007. The reversal of 61866984 is 48966816.

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, 1288872 + ... + 1288919.

It is an arithmetic number, because the mean of its divisors is an integer number (9666720).

Almost surely, 2^61866984 is an apocalyptic number.

It is an amenable number.

61866984 is an abundant number, since it is smaller than the sum of its proper divisors (92800536).

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

61866984 is a wasteful number, since it uses less digits than its factorization.

61866984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577800 (or 2577796 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 61866984 is about 7865.5568143648. The cubic root of 61866984 is about 395.5059137345.

The spelling of 61866984 in words is "sixty-one million, eight hundred sixty-six thousand, nine hundred eighty-four".