61661514 has 16 divisors (see below), whose sum is σ = 124709760. Its totient is φ = 20322720.

The previous prime is 61661513. The next prime is 61661519. The reversal of 61661514 is 41516616.

61661514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61661514³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61661513) 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, 57202 + ... + 58269.

It is an arithmetic number, because the mean of its divisors is an integer number (7794360).

Almost surely, 2^61661514 is an apocalyptic number.

61661514 is an abundant number, since it is smaller than the sum of its proper divisors (63048246).

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

61661514 is a wasteful number, since it uses less digits than its factorization.

61661514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115565.

The product of its digits is 4320, while the sum is 30.

The square root of 61661514 is about 7852.4845749610. The cubic root of 61661514 is about 395.0675823049.

The spelling of 61661514 in words is "sixty-one million, six hundred sixty-one thousand, five hundred fourteen".