673861684 has 6 divisors (see below), whose sum is σ = 1179257954. Its totient is φ = 336930840.

The previous prime is 673861681. The next prime is 673861709. The reversal of 673861684 is 486168376.

It can be written as a sum of positive squares in only one way, i.e., 555922084 + 117939600 = 23578^2 + 10860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673861681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84232707 + ... + 84232714.

Almost surely, 2^673861684 is an apocalyptic number.

It is an amenable number.

673861684 is a deficient number, since it is larger than the sum of its proper divisors (505396270).

673861684 is a wasteful number, since it uses less digits than its factorization.

673861684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168465425 (or 168465423 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 673861684 is about 25958.8459681859. The cubic root of 673861684 is about 876.7119393957.

The spelling of 673861684 in words is "six hundred seventy-three million, eight hundred sixty-one thousand, six hundred eighty-four".