3545691 has 4 divisors (see below), whose sum is σ = 4727592. Its totient is φ = 2363792.

The previous prime is 3545629. The next prime is 3545693. The reversal of 3545691 is 1965453.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3545691 - 2¹¹ = 3543643 is a prime.

It is an Ulam number.

It is a D-number.

3545691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3545693) 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, 590946 + ... + 590951.

It is an arithmetic number, because the mean of its divisors is an integer number (1181898).

Almost surely, 2^3545691 is an apocalyptic number.

3545691 is a deficient number, since it is larger than the sum of its proper divisors (1181901).

3545691 is a wasteful number, since it uses less digits than its factorization.

3545691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181900.

The product of its digits is 16200, while the sum is 33.

The square root of 3545691 is about 1883.0005310674. Note that the first 3 decimals coincide. The cubic root of 3545691 is about 152.4872837198.

The spelling of 3545691 in words is "three million, five hundred forty-five thousand, six hundred ninety-one".