61827801 has 16 divisors (see below), whose sum is σ = 95622144. Its totient is φ = 34802064.

The previous prime is 61827769. The next prime is 61827833. The reversal of 61827801 is 10872816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61827769) and next prime (61827833).

It is not a de Polignac number, because 61827801 - 2⁵ = 61827769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61827001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20565 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (5976384).

Almost surely, 2^61827801 is an apocalyptic number.

It is an amenable number.

61827801 is a deficient number, since it is larger than the sum of its proper divisors (33794343).

61827801 is a wasteful number, since it uses less digits than its factorization.

61827801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44020.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 61827801 is about 7863.0656235339. The cubic root of 61827801 is about 395.4223991789.

The spelling of 61827801 in words is "sixty-one million, eight hundred twenty-seven thousand, eight hundred one".