673687072 has 24 divisors (see below), whose sum is σ = 1358673372. Its totient is φ = 328627200.

The previous prime is 673687061. The next prime is 673687073. The reversal of 673687072 is 270786376.

It can be written as a sum of positive squares in 2 ways, for example, as 543635856 + 130051216 = 23316^2 + 11404^2 .

It is not an unprimeable number, because it can be changed into a prime (673687073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255429 + ... + 258052.

Almost surely, 2^673687072 is an apocalyptic number.

It is an amenable number.

673687072 is an abundant number, since it is smaller than the sum of its proper divisors (684986300).

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

673687072 is a wasteful number, since it uses less digits than its factorization.

673687072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513532 (or 513524 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 673687072 is about 25955.4825037024. The cubic root of 673687072 is about 876.6362079050.

The spelling of 673687072 in words is "six hundred seventy-three million, six hundred eighty-seven thousand, seventy-two".