3520641 has 8 divisors (see below), whose sum is σ = 4704480. Its totient is φ = 2341952.

The previous prime is 3520613. The next prime is 3520663. The reversal of 3520641 is 1460253.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3520641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3520691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790 + ... + 2768.

It is an arithmetic number, because the mean of its divisors is an integer number (588060).

Almost surely, 2^3520641 is an apocalyptic number.

It is an amenable number.

3520641 is a deficient number, since it is larger than the sum of its proper divisors (1183839).

3520641 is a wasteful number, since it uses less digits than its factorization.

3520641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3520641 is about 1876.3371232271. The cubic root of 3520641 is about 152.1273315538.

Adding to 3520641 its reverse (1460253), we get a palindrome (4980894).

The spelling of 3520641 in words is "three million, five hundred twenty thousand, six hundred forty-one".