3405261 has 4 divisors (see below), whose sum is σ = 4540352. Its totient is φ = 2270172.

The previous prime is 3405247. The next prime is 3405263. The reversal of 3405261 is 1625043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3405261 - 2¹⁴ = 3388877 is a prime.

It is a D-number.

It is a Duffinian number.

3405261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405263) 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, 567541 + ... + 567546.

It is an arithmetic number, because the mean of its divisors is an integer number (1135088).

Almost surely, 2^3405261 is an apocalyptic number.

It is an amenable number.

3405261 is a deficient number, since it is larger than the sum of its proper divisors (1135091).

3405261 is a wasteful number, since it uses less digits than its factorization.

3405261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135090.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3405261 is about 1845.3349289492. The cubic root of 3405261 is about 150.4469778601.

The spelling of 3405261 in words is "three million, four hundred five thousand, two hundred sixty-one".