3453681 has 16 divisors (see below), whose sum is σ = 5741568. Its totient is φ = 1794000.

The previous prime is 3453677. The next prime is 3453689. The reversal of 3453681 is 1863543.

It is not a de Polignac number, because 3453681 - 2² = 3453677 is a prime.

It is a super-2 number, since 2×3453681² = 23855824899522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3453689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7245 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (358848).

Almost surely, 2^3453681 is an apocalyptic number.

It is an amenable number.

3453681 is a deficient number, since it is larger than the sum of its proper divisors (2287887).

3453681 is a wasteful number, since it uses less digits than its factorization.

3453681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14972.

The product of its digits is 8640, while the sum is 30.

The square root of 3453681 is about 1858.4081898227. The cubic root of 3453681 is about 151.1567017899.

The spelling of 3453681 in words is "three million, four hundred fifty-three thousand, six hundred eighty-one".