3520240613 has 4 divisors (see below), whose sum is σ = 3534265728. Its totient is φ = 3506215500.

The previous prime is 3520240601. The next prime is 3520240621. The reversal of 3520240613 is 3160420253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3520240613 - 2²⁰ = 3519192037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520240663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7012181 + ... + 7012682.

It is an arithmetic number, because the mean of its divisors is an integer number (883566432).

Almost surely, 2^3520240613 is an apocalyptic number.

It is an amenable number.

3520240613 is a deficient number, since it is larger than the sum of its proper divisors (14025115).

3520240613 is a wasteful number, since it uses less digits than its factorization.

3520240613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025114.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3520240613 is about 59331.6156277579. The cubic root of 3520240613 is about 1521.2156441133.

Adding to 3520240613 its reverse (3160420253), we get a palindrome (6680660866).

The spelling of 3520240613 in words is "three billion, five hundred twenty million, two hundred forty thousand, six hundred thirteen".