3420765 has 16 divisors (see below), whose sum is σ = 6081600. Its totient is φ = 1824336.

The previous prime is 3420763. The next prime is 3420773. The reversal of 3420765 is 5670243.

It is a happy number.

3420765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3420765 - 2¹ = 3420763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

3420765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420763) 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 15 ways as a sum of consecutive naturals, for example, 12535 + ... + 12804.

It is an arithmetic number, because the mean of its divisors is an integer number (380100).

Almost surely, 2^3420765 is an apocalyptic number.

It is an amenable number.

3420765 is a deficient number, since it is larger than the sum of its proper divisors (2660835).

3420765 is a wasteful number, since it uses less digits than its factorization.

3420765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25353 (or 25347 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3420765 is about 1849.5310216376. The cubic root of 3420765 is about 150.6749583197.

The spelling of 3420765 in words is "three million, four hundred twenty thousand, seven hundred sixty-five".