3520012661 has 8 divisors (see below), whose sum is σ = 3842624448. Its totient is φ = 3197836000.

The previous prime is 3520012633. The next prime is 3520012693. The reversal of 3520012661 is 1662100253.

3520012661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3520012661 - 2²² = 3515818357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3520012661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520012261) 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 in 7 ways as a sum of consecutive naturals, for example, 91745 + ... + 124326.

It is an arithmetic number, because the mean of its divisors is an integer number (480328056).

Almost surely, 2^3520012661 is an apocalyptic number.

It is an amenable number.

3520012661 is a deficient number, since it is larger than the sum of its proper divisors (322611787).

3520012661 is a wasteful number, since it uses less digits than its factorization.

3520012661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217563.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3520012661 is about 59329.6945972251. The cubic root of 3520012661 is about 1521.1828081350.

The spelling of 3520012661 in words is "three billion, five hundred twenty million, twelve thousand, six hundred sixty-one".