61716071 has 8 divisors (see below), whose sum is σ = 64425600. Its totient is φ = 59051520.

The previous prime is 61716059. The next prime is 61716073. The reversal of 61716071 is 17061716.

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 61716071 - 2²² = 57521767 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 (61716073) 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 7 ways as a sum of consecutive naturals, for example, 8426 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (8053200).

Almost surely, 2^61716071 is an apocalyptic number.

61716071 is a deficient number, since it is larger than the sum of its proper divisors (2709529).

61716071 is a wasteful number, since it uses less digits than its factorization.

61716071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22489.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 61716071 is about 7855.9576755479. The cubic root of 61716071 is about 395.1840641914.

Adding to 61716071 its reverse (17061716), we get a palindrome (78777787).

The spelling of 61716071 in words is "sixty-one million, seven hundred sixteen thousand, seventy-one".