3365621761 has 2 divisors, whose sum is σ = 3365621762. Its totient is φ = 3365621760.

The previous prime is 3365621759. The next prime is 3365621773. The reversal of 3365621761 is 1671265633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3335755536 + 29866225 = 57756^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 3365621761 - 2¹ = 3365621759 is a prime.

It is a super-2 number, since 2×3365621761² = 22654819676233482242, which contains 22 as substring.

Together with 3365621759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3365622761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1682810880 + 1682810881.

It is an arithmetic number, because the mean of its divisors is an integer number (1682810881).

Almost surely, 2^3365621761 is an apocalyptic number.

It is an amenable number.

3365621761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3365621761 is an equidigital number, since it uses as much as digits as its factorization.

3365621761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 3365621761 is about 58013.9790136826. The cubic root of 3365621761 is about 1498.6093423719.

The spelling of 3365621761 in words is "three billion, three hundred sixty-five million, six hundred twenty-one thousand, seven hundred sixty-one".