3493643 has 4 divisors (see below), whose sum is σ = 3521280. Its totient is φ = 3466008.

The previous prime is 3493597. The next prime is 3493661. The reversal of 3493643 is 3463943.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463943 = 7 ⋅494849.

It is a cyclic number.

It is not a de Polignac number, because 3493643 - 2¹⁴ = 3477259 is a prime.

It is a super-2 number, since 2×3493643² = 24411082822898, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3495643) 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, 13628 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (880320).

Almost surely, 2^3493643 is an apocalyptic number.

3493643 is a deficient number, since it is larger than the sum of its proper divisors (27637).

3493643 is a wasteful number, since it uses less digits than its factorization.

3493643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27636.

The product of its digits is 23328, while the sum is 32.

The square root of 3493643 is about 1869.1289415126. The cubic root of 3493643 is about 151.7374709993.

The spelling of 3493643 in words is "three million, four hundred ninety-three thousand, six hundred forty-three".