3520631 has 8 divisors (see below), whose sum is σ = 3616704. Its totient is φ = 3425760.

The previous prime is 3520613. The next prime is 3520663. The reversal of 3520631 is 1360253.

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 3520631 - 2¹⁸ = 3258487 is a prime.

It is a super-2 number, since 2×3520631² = 24789685276322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 9410 + ... + 9776.

It is an arithmetic number, because the mean of its divisors is an integer number (452088).

Almost surely, 2^3520631 is an apocalyptic number.

3520631 is a deficient number, since it is larger than the sum of its proper divisors (96073).

3520631 is a wasteful number, since it uses less digits than its factorization.

3520631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3520631 is about 1876.3344584588. The cubic root of 3520631 is about 152.1271875200.

Adding to 3520631 its reverse (1360253), we get a palindrome (4880884).

The spelling of 3520631 in words is "three million, five hundred twenty thousand, six hundred thirty-one".