673621406 has 8 divisors (see below), whose sum is σ = 1015561800. Its totient is φ = 335100808.

The previous prime is 673621397. The next prime is 673621423. The reversal of 673621406 is 604126376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854456 + ... + 855243.

It is an arithmetic number, because the mean of its divisors is an integer number (126945225).

Almost surely, 2^673621406 is an apocalyptic number.

673621406 is a deficient number, since it is larger than the sum of its proper divisors (341940394).

673621406 is a wasteful number, since it uses less digits than its factorization.

673621406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709898.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 673621406 is about 25954.2174992813. The cubic root of 673621406 is about 876.6077243226.

The spelling of 673621406 in words is "six hundred seventy-three million, six hundred twenty-one thousand, four hundred six".