3722647007689 has 2 divisors, whose sum is σ = 3722647007690. Its totient is φ = 3722647007688.

The previous prime is 3722647007687. The next prime is 3722647007749. The reversal of 3722647007689 is 9867007462273.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3543870255289 + 178776752400 = 1882517^2 + 422820^2 .

It is a cyclic number.

It is not a de Polignac number, because 3722647007689 - 2¹ = 3722647007687 is a prime.

Together with 3722647007687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3722647007687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861323503844 + 1861323503845.

It is an arithmetic number, because the mean of its divisors is an integer number (1861323503845).

Almost surely, 2^{3722647007689} is an apocalyptic number.

It is an amenable number.

3722647007689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3722647007689 is an equidigital number, since it uses as much as digits as its factorization.

3722647007689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42674688, while the sum is 61.

The spelling of 3722647007689 in words is "three trillion, seven hundred twenty-two billion, six hundred forty-seven million, seven thousand, six hundred eighty-nine".