61659085 has 32 divisors (see below), whose sum is σ = 83756160. Its totient is φ = 43296768.

The previous prime is 61659083. The next prime is 61659097. The reversal of 61659085 is 58095616.

It is a cyclic number.

It is not a de Polignac number, because 61659085 - 2¹ = 61659083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61659083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117634 + ... + 118156.

It is an arithmetic number, because the mean of its divisors is an integer number (2617380).

Almost surely, 2^61659085 is an apocalyptic number.

It is an amenable number.

61659085 is a deficient number, since it is larger than the sum of its proper divisors (22097075).

61659085 is a wasteful number, since it uses less digits than its factorization.

61659085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 61659085 is about 7852.3299090143. The cubic root of 61659085 is about 395.0623946727.

The spelling of 61659085 in words is "sixty-one million, six hundred fifty-nine thousand, eighty-five".