61880089 has 4 divisors (see below), whose sum is σ = 61897780. Its totient is φ = 61862400.

The previous prime is 61880087. The next prime is 61880107. The reversal of 61880089 is 98008816.

It is a happy number.

61880089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38192400 + 23687689 = 6180^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 61880089 - 2¹ = 61880087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61880081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644 + ... + 11245.

It is an arithmetic number, because the mean of its divisors is an integer number (15474445).

Almost surely, 2^61880089 is an apocalyptic number.

It is an amenable number.

61880089 is a deficient number, since it is larger than the sum of its proper divisors (17691).

61880089 is a wasteful number, since it uses less digits than its factorization.

61880089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17690.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 61880089 is about 7866.3898326996. The cubic root of 61880089 is about 395.5338378320.

The spelling of 61880089 in words is "sixty-one million, eight hundred eighty thousand, eighty-nine".