3401645 has 16 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 2466624.

The previous prime is 3401621. The next prime is 3401659. The reversal of 3401645 is 5461043.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3401645 - 2¹² = 3397549 is a prime.

It is a super-3 number, since 3×3401645³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3401645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3392 + ... + 4278.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

Almost surely, 2^3401645 is an apocalyptic number.

It is an amenable number.

3401645 is a deficient number, since it is larger than the sum of its proper divisors (1073875).

3401645 is a wasteful number, since it uses less digits than its factorization.

3401645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3401645 is about 1844.3549007715. The cubic root of 3401645 is about 150.3937064714.

Adding to 3401645 its reverse (5461043), we get a palindrome (8862688).

The spelling of 3401645 in words is "three million, four hundred one thousand, six hundred forty-five".