673656406 has 16 divisors (see below), whose sum is σ = 1020927600. Its totient is φ = 333354528.

The previous prime is 673656329. The next prime is 673656413. The reversal of 673656406 is 604656376.

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, 331000 + ... + 333028.

It is an arithmetic number, because the mean of its divisors is an integer number (63807975).

Almost surely, 2^673656406 is an apocalyptic number.

673656406 is a deficient number, since it is larger than the sum of its proper divisors (347271194).

673656406 is a wasteful number, since it uses less digits than its factorization.

673656406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 673656406 is about 25954.8917547348. The cubic root of 673656406 is about 876.6229063119.

The spelling of 673656406 in words is "six hundred seventy-three million, six hundred fifty-six thousand, four hundred six".