3520406647 has 2 divisors, whose sum is σ = 3520406648. Its totient is φ = 3520406646.

The previous prime is 3520406639. The next prime is 3520406683. The reversal of 3520406647 is 7466040253.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3520406647 - 2³ = 3520406639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3520406047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760203323 + 1760203324.

It is an arithmetic number, because the mean of its divisors is an integer number (1760203324).

Almost surely, 2^3520406647 is an apocalyptic number.

3520406647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520406647 is an equidigital number, since it uses as much as digits as its factorization.

3520406647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 3520406647 is about 59333.0148146881. The cubic root of 3520406647 is about 1521.2395600493.

The spelling of 3520406647 in words is "three billion, five hundred twenty million, four hundred six thousand, six hundred forty-seven".