61879668 has 24 divisors (see below), whose sum is σ = 144850272. Its totient is φ = 20560224.

The previous prime is 61879667. The next prime is 61879669. The reversal of 61879668 is 86697816.

It is a happy number.

61879668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61879667) and next prime (61879669).

It is a self number, because there is not a number n which added to its sum of digits gives 61879668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61879661) 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 7 ways as a sum of consecutive naturals, for example, 4330 + ... + 11937.

It is an arithmetic number, because the mean of its divisors is an integer number (6035428).

Almost surely, 2^61879668 is an apocalyptic number.

It is an amenable number.

61879668 is an abundant number, since it is smaller than the sum of its proper divisors (82970604).

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

61879668 is a wasteful number, since it uses less digits than its factorization.

61879668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16591 (or 16589 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 61879668 is about 7866.3630732378. The cubic root of 61879668 is about 395.5329408277.

The spelling of 61879668 in words is "sixty-one million, eight hundred seventy-nine thousand, six hundred sixty-eight".