3524520643 has 16 divisors (see below), whose sum is σ = 4047972544. Its totient is φ = 3006097920.

The previous prime is 3524520607. The next prime is 3524520689. The reversal of 3524520643 is 3460254253.

3524520643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3524520643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3524520599 and 3524520608.

It is not an unprimeable number, because it can be changed into a prime (3524500643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1345471 + ... + 1348087.

It is an arithmetic number, because the mean of its divisors is an integer number (252998284).

Almost surely, 2^3524520643 is an apocalyptic number.

3524520643 is a deficient number, since it is larger than the sum of its proper divisors (523451901).

3524520643 is a wasteful number, since it uses less digits than its factorization.

3524520643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502.

The product of its (nonzero) digits is 86400, while the sum is 34.

The square root of 3524520643 is about 59367.6733837532. The cubic root of 3524520643 is about 1521.8319099111.

Adding to 3524520643 its reverse (3460254253), we get a palindrome (6984774896).

The spelling of 3524520643 in words is "three billion, five hundred twenty-four million, five hundred twenty thousand, six hundred forty-three".