61827804 has 18 divisors (see below), whose sum is σ = 156287040. Its totient is φ = 20609256.

The previous prime is 61827769. The next prime is 61827833. The reversal of 61827804 is 40872816.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1717439 = 61827804 / (6 + 1 + 8 + 2 + 7 + 8 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858684 + ... + 858755.

Almost surely, 2^61827804 is an apocalyptic number.

It is an amenable number.

61827804 is an abundant number, since it is smaller than the sum of its proper divisors (94459236).

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

61827804 is a wasteful number, since it uses less digits than its factorization.

61827804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717449 (or 1717444 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 61827804 is about 7863.0658142992. The cubic root of 61827804 is about 395.4224055745.

The spelling of 61827804 in words is "sixty-one million, eight hundred twenty-seven thousand, eight hundred four".