3420456856 has 32 divisors (see below), whose sum is σ = 6459534000. Its totient is φ = 1697955840.

The previous prime is 3420456803. The next prime is 3420456859. The reversal of 3420456856 is 6586540243.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420456859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755656 + ... + 760168.

Almost surely, 2^3420456856 is an apocalyptic number.

It is an amenable number.

3420456856 is a deficient number, since it is larger than the sum of its proper divisors (3039077144).

3420456856 is a wasteful number, since it uses less digits than its factorization.

3420456856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The square root of 3420456856 is about 58484.6719748004. The cubic root of 3420456856 is about 1506.7043389524.

The spelling of 3420456856 in words is "three billion, four hundred twenty million, four hundred fifty-six thousand, eight hundred fifty-six".