73661713 has 2 divisors, whose sum is σ = 73661714. Its totient is φ = 73661712.

The previous prime is 73661701. The next prime is 73661747. The reversal of 73661713 is 31716637.

It is a happy number.

It is an a-pointer prime, because the next prime (73661747) can be obtained adding 73661713 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 6880129 = 8172^2 + 2623^2 .

It is a cyclic number.

It is not a de Polignac number, because 73661713 - 2⁵ = 73661681 is a prime.

It is not a weakly prime, because it can be changed into another prime (73661773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36830856 + 36830857.

It is an arithmetic number, because the mean of its divisors is an integer number (36830857).

Almost surely, 2^73661713 is an apocalyptic number.

It is an amenable number.

73661713 is a deficient number, since it is larger than the sum of its proper divisors (1).

73661713 is an equidigital number, since it uses as much as digits as its factorization.

73661713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 73661713 is about 8582.6402114967. The cubic root of 73661713 is about 419.1929190995.

The spelling of 73661713 in words is "seventy-three million, six hundred sixty-one thousand, seven hundred thirteen".