3503661 has 8 divisors (see below), whose sum is σ = 5338944. Its totient is φ = 2002080.

The previous prime is 3503639. The next prime is 3503677. The reversal of 3503661 is 1663053.

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

It is not a de Polignac number, because 3503661 - 2⁵ = 3503629 is a prime.

3503661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3503161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83400 + ... + 83441.

It is an arithmetic number, because the mean of its divisors is an integer number (667368).

Almost surely, 2^3503661 is an apocalyptic number.

It is an amenable number.

3503661 is a deficient number, since it is larger than the sum of its proper divisors (1835283).

3503661 is a wasteful number, since it uses less digits than its factorization.

3503661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166851.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 3503661 is about 1871.8068810644. The cubic root of 3503661 is about 151.8823680146.

The spelling of 3503661 in words is "three million, five hundred three thousand, six hundred sixty-one".