61712017 has 2 divisors, whose sum is σ = 61712018. Its totient is φ = 61712016.

The previous prime is 61711973. The next prime is 61712047. The reversal of 61712017 is 71021716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38825361 + 22886656 = 6231^2 + 4784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61712017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61711982 and 61712000.

It is not a weakly prime, because it can be changed into another prime (61712047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30856008 + 30856009.

It is an arithmetic number, because the mean of its divisors is an integer number (30856009).

Almost surely, 2^61712017 is an apocalyptic number.

It is an amenable number.

61712017 is a deficient number, since it is larger than the sum of its proper divisors (1).

61712017 is an equidigital number, since it uses as much as digits as its factorization.

61712017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 61712017 is about 7855.6996505722. The cubic root of 61712017 is about 395.1754110629.

The spelling of 61712017 in words is "sixty-one million, seven hundred twelve thousand, seventeen".