61880164 has 12 divisors (see below), whose sum is σ = 108470124. Its totient is φ = 30888704.

The previous prime is 61880149. The next prime is 61880167. The reversal of 61880164 is 46108816.

61880164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10614564 + 51265600 = 3258^2 + 7160^2 .

It is a super-3 number, since 3×61880164³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61880167) 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, 10069 + ... + 15004.

It is an arithmetic number, because the mean of its divisors is an integer number (9039177).

Almost surely, 2^61880164 is an apocalyptic number.

It is an amenable number.

61880164 is a deficient number, since it is larger than the sum of its proper divisors (46589960).

61880164 is a wasteful number, since it uses less digits than its factorization.

61880164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25694 (or 25692 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 61880164 is about 7866.3945998151. The cubic root of 61880164 is about 395.5339976304.

The spelling of 61880164 in words is "sixty-one million, eight hundred eighty thousand, one hundred sixty-four".