61286717 has 8 divisors (see below), whose sum is σ = 65108736. Its totient is φ = 57488832.

The previous prime is 61286713. The next prime is 61286737. The reversal of 61286717 is 71768216.

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

It is not a de Polignac number, because 61286717 - 2² = 61286713 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 (61286713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653 + ... + 11090.

It is an arithmetic number, because the mean of its divisors is an integer number (8138592).

Almost surely, 2^61286717 is an apocalyptic number.

It is an amenable number.

61286717 is a deficient number, since it is larger than the sum of its proper divisors (3822019).

61286717 is a wasteful number, since it uses less digits than its factorization.

61286717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067.

The product of its digits is 28224, while the sum is 38.

The square root of 61286717 is about 7828.5833328898. The cubic root of 61286717 is about 394.2655089802.

The spelling of 61286717 in words is "sixty-one million, two hundred eighty-six thousand, seven hundred seventeen".