673295638 has 4 divisors (see below), whose sum is σ = 1009943460. Its totient is φ = 336647818.

The previous prime is 673295621. The next prime is 673295657. The reversal of 673295638 is 836592376.

It is a happy number.

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

It is a super-2 number, since 2×673295638² = 906654032299654088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 673295591 and 673295600.

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, 168323908 + ... + 168323911.

It is an arithmetic number, because the mean of its divisors is an integer number (252485865).

Almost surely, 2^673295638 is an apocalyptic number.

673295638 is a deficient number, since it is larger than the sum of its proper divisors (336647822).

673295638 is a wasteful number, since it uses less digits than its factorization.

673295638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336647821.

The product of its digits is 1632960, while the sum is 49.

The square root of 673295638 is about 25947.9409202349. The cubic root of 673295638 is about 876.4663903380.

The spelling of 673295638 in words is "six hundred seventy-three million, two hundred ninety-five thousand, six hundred thirty-eight".