3420656 has 10 divisors (see below), whose sum is σ = 6627552. Its totient is φ = 1710320.

The previous prime is 3420653. The next prime is 3420667. The reversal of 3420656 is 6560243.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106880 + ... + 106911.

Almost surely, 2^3420656 is an apocalyptic number.

It is an amenable number.

3420656 is a deficient number, since it is larger than the sum of its proper divisors (3206896).

3420656 is a wasteful number, since it uses less digits than its factorization.

3420656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213799 (or 213793 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3420656 is about 1849.5015544735. The cubic root of 3420656 is about 150.6733579228.

Adding to 3420656 its reverse (6560243), we get a palindrome (9980899).

The spelling of 3420656 in words is "three million, four hundred twenty thousand, six hundred fifty-six".