673898438 has 4 divisors (see below), whose sum is σ = 1010847660. Its totient is φ = 336949218.

The previous prime is 673898437. The next prime is 673898443. The reversal of 673898438 is 834898376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673898431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168474608 + ... + 168474611.

It is an arithmetic number, because the mean of its divisors is an integer number (252711915).

Almost surely, 2^673898438 is an apocalyptic number.

673898438 is a deficient number, since it is larger than the sum of its proper divisors (336949222).

673898438 is a wasteful number, since it uses less digits than its factorization.

673898438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336949221.

The product of its digits is 6967296, while the sum is 56.

The square root of 673898438 is about 25959.5538867678. The cubic root of 673898438 is about 876.7278784158.

The spelling of 673898438 in words is "six hundred seventy-three million, eight hundred ninety-eight thousand, four hundred thirty-eight".