3500643 has 8 divisors (see below), whose sum is σ = 4676800. Its totient is φ = 2329128.

The previous prime is 3500593. The next prime is 3500671. The reversal of 3500643 is 3460053.

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

It is not a de Polignac number, because 3500643 - 2¹⁰ = 3499619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3500443) 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, 1428 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (584600).

Almost surely, 2^3500643 is an apocalyptic number.

3500643 is a deficient number, since it is larger than the sum of its proper divisors (1176157).

3500643 is a wasteful number, since it uses less digits than its factorization.

3500643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 3500643 is about 1871.0005344735. Note that the first 3 decimals coincide. The cubic root of 3500643 is about 151.8387457707.

Adding to 3500643 its reverse (3460053), we get a palindrome (6960696).

The spelling of 3500643 in words is "three million, five hundred thousand, six hundred forty-three".