61866234 has 32 divisors (see below), whose sum is σ = 138024000. Its totient is φ = 20540592.

The previous prime is 61866227. The next prime is 61866269. The reversal of 61866234 is 43266816.

61866234 is a `hidden beast` number, since 618 + 6 + 6 + 2 + 34 = 666.

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 15 ways as a sum of consecutive naturals, for example, 12397 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (4313250).

Almost surely, 2^61866234 is an apocalyptic number.

61866234 is an abundant number, since it is smaller than the sum of its proper divisors (76157766).

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

61866234 is a wasteful number, since it uses less digits than its factorization.

61866234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 4533 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 61866234 is about 7865.5091380024. The cubic root of 61866234 is about 395.5043155173.

The spelling of 61866234 in words is "sixty-one million, eight hundred sixty-six thousand, two hundred thirty-four".