673400680 has 16 divisors (see below), whose sum is σ = 1515151620. Its totient is φ = 269360256.

The previous prime is 673400671. The next prime is 673400681. The reversal of 673400680 is 86004376.

It can be written as a sum of positive squares in 2 ways, for example, as 661827076 + 11573604 = 25726^2 + 3402^2 .

It is not an unprimeable number, because it can be changed into a prime (673400681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8417469 + ... + 8417548.

Almost surely, 2^673400680 is an apocalyptic number.

It is an amenable number.

673400680 is an abundant number, since it is smaller than the sum of its proper divisors (841750940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673400680 is a wasteful number, since it uses less digits than its factorization.

673400680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835028 (or 16835024 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 673400680 is about 25949.9649325389. The cubic root of 673400680 is about 876.5119676397.

The spelling of 673400680 in words is "six hundred seventy-three million, four hundred thousand, six hundred eighty".