6430406456 has 8 divisors (see below), whose sum is σ = 12057012120. Its totient is φ = 3215203224.

The previous prime is 6430406449. The next prime is 6430406467. The reversal of 6430406456 is 6546040346.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401900396 + ... + 401900411.

It is an arithmetic number, because the mean of its divisors is an integer number (1507126515).

Almost surely, 2^6430406456 is an apocalyptic number.

It is an amenable number.

6430406456 is a deficient number, since it is larger than the sum of its proper divisors (5626605664).

6430406456 is a wasteful number, since it uses less digits than its factorization.

6430406456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803800813 (or 803800809 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 6430406456 is about 80189.8151637725. The cubic root of 6430406456 is about 1859.5711864592.

The spelling of 6430406456 in words is "six billion, four hundred thirty million, four hundred six thousand, four hundred fifty-six".