61605061 has 8 divisors (see below), whose sum is σ = 70534080. Its totient is φ = 52708128.

The previous prime is 61605031. The next prime is 61605101. The reversal of 61605061 is 16050616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61605061 - 2²³ = 53216453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61605031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3751 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (8816760).

Almost surely, 2^61605061 is an apocalyptic number.

It is an amenable number.

61605061 is a deficient number, since it is larger than the sum of its proper divisors (8929019).

61605061 is a wasteful number, since it uses less digits than its factorization.

61605061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16043.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 61605061 is about 7848.8891570718. The cubic root of 61605061 is about 394.9469800117.

Adding to 61605061 its reverse (16050616), we get a palindrome (77655677).

The spelling of 61605061 in words is "sixty-one million, six hundred five thousand, sixty-one".