61707713 has 2 divisors, whose sum is σ = 61707714. Its totient is φ = 61707712.

The previous prime is 61707691. The next prime is 61707719. The reversal of 61707713 is 31770716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55472704 + 6235009 = 7448^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 61707713 - 2¹² = 61703617 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61707713.

It is not a weakly prime, because it can be changed into another prime (61707719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30853856 + 30853857.

It is an arithmetic number, because the mean of its divisors is an integer number (30853857).

Almost surely, 2^61707713 is an apocalyptic number.

It is an amenable number.

61707713 is a deficient number, since it is larger than the sum of its proper divisors (1).

61707713 is an equidigital number, since it uses as much as digits as its factorization.

61707713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 61707713 is about 7855.4257045688. The cubic root of 61707713 is about 395.1662239030.

The spelling of 61707713 in words is "sixty-one million, seven hundred seven thousand, seven hundred thirteen".