3405620 has 24 divisors (see below), whose sum is σ = 7305984. Its totient is φ = 1332896.

The previous prime is 3405613. The next prime is 3405637. The reversal of 3405620 is 265043.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3405592 and 3405601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (304416).

Almost surely, 2^3405620 is an apocalyptic number.

It is an amenable number.

3405620 is an abundant number, since it is smaller than the sum of its proper divisors (3900364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3405620 is a wasteful number, since it uses less digits than its factorization.

3405620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3405620 is about 1845.4321987003. The cubic root of 3405620 is about 150.4522646371.

The spelling of 3405620 in words is "three million, four hundred five thousand, six hundred twenty".