3535681 has 4 divisors (see below), whose sum is σ = 3570112. Its totient is φ = 3501252.

The previous prime is 3535673. The next prime is 3535687. The reversal of 3535681 is 1865353.

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 an emirpimes, since its reverse is a distinct semiprime: 1865353 = 7 ⋅266479.

It is a cyclic number.

It is not a de Polignac number, because 3535681 - 2³ = 3535673 is a prime.

It is a super-2 number, since 2×3535681² = 25002080267522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3535687) 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, 17061 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (892528).

Almost surely, 2^3535681 is an apocalyptic number.

It is an amenable number.

3535681 is a deficient number, since it is larger than the sum of its proper divisors (34431).

3535681 is a wasteful number, since it uses less digits than its factorization.

3535681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34430.

The product of its digits is 10800, while the sum is 31.

The square root of 3535681 is about 1880.3406606251. The cubic root of 3535681 is about 152.3436505623.

The spelling of 3535681 in words is "three million, five hundred thirty-five thousand, six hundred eighty-one".