61660083 has 4 divisors (see below), whose sum is σ = 82213448. Its totient is φ = 41106720.

The previous prime is 61660069. The next prime is 61660097. The reversal of 61660083 is 38006616.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61660069) and next prime (61660097).

It is not a de Polignac number, because 61660083 - 2⁵ = 61660051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61660083.

It is not an unprimeable number, because it can be changed into a prime (61660043) 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 3 ways as a sum of consecutive naturals, for example, 10276678 + ... + 10276683.

It is an arithmetic number, because the mean of its divisors is an integer number (20553362).

Almost surely, 2^61660083 is an apocalyptic number.

61660083 is a deficient number, since it is larger than the sum of its proper divisors (20553365).

61660083 is a wasteful number, since it uses less digits than its factorization.

61660083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20553364.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 61660083 is about 7852.3934567748. The cubic root of 61660083 is about 395.0645261247.

Adding to 61660083 its reverse (38006616), we get a palindrome (99666699).

The spelling of 61660083 in words is "sixty-one million, six hundred sixty thousand, eighty-three".