673747798 has 4 divisors (see below), whose sum is σ = 1010621700. Its totient is φ = 336873898.

The previous prime is 673747777. The next prime is 673747813. The reversal of 673747798 is 897747376.

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

It is a super-3 number, since 3×673747798³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 168436948 + ... + 168436951.

It is an arithmetic number, because the mean of its divisors is an integer number (252655425).

Almost surely, 2^673747798 is an apocalyptic number.

673747798 is a deficient number, since it is larger than the sum of its proper divisors (336873902).

673747798 is a wasteful number, since it uses less digits than its factorization.

673747798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336873901.

The product of its digits is 12446784, while the sum is 58.

The square root of 673747798 is about 25956.6522879974. The cubic root of 673747798 is about 876.6625470433.

The spelling of 673747798 in words is "six hundred seventy-three million, seven hundred forty-seven thousand, seven hundred ninety-eight".