3535661 has 4 divisors (see below), whose sum is σ = 3539424. Its totient is φ = 3531900.

The previous prime is 3535639. The next prime is 3535663. The reversal of 3535661 is 1665353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1665353 = 401 ⋅4153.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3535661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3535663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866 + ... + 2796.

It is an arithmetic number, because the mean of its divisors is an integer number (884856).

Almost surely, 2^3535661 is an apocalyptic number.

It is an amenable number.

3535661 is a deficient number, since it is larger than the sum of its proper divisors (3763).

3535661 is a wasteful number, since it uses less digits than its factorization.

3535661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762.

The product of its digits is 8100, while the sum is 29.

The square root of 3535661 is about 1880.3353424323. The cubic root of 3535661 is about 152.3433633118.

The spelling of 3535661 in words is "three million, five hundred thirty-five thousand, six hundred sixty-one".