3445681 has 8 divisors (see below), whose sum is σ = 3644928. Its totient is φ = 3252000.

The previous prime is 3445667. The next prime is 3445691. The reversal of 3445681 is 1865443.

It is a happy number.

3445681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3445681 - 2⁵ = 3445649 is a prime.

It is a super-2 number, since 2×3445681² = 23745435107522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3445601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (455616).

Almost surely, 2^3445681 is an apocalyptic number.

3445681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3445681 is a deficient number, since it is larger than the sum of its proper divisors (199247).

3445681 is a wasteful number, since it uses less digits than its factorization.

3445681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783.

The product of its digits is 11520, while the sum is 31.

The square root of 3445681 is about 1856.2545622840. The cubic root of 3445681 is about 151.0398999862.

It can be divided in two parts, 344568 and 1, that added together give a square (344569 = 587²).

The spelling of 3445681 in words is "three million, four hundred forty-five thousand, six hundred eighty-one".