673871720 has 64 divisors (see below), whose sum is σ = 1534982400. Its totient is φ = 266237440.

The previous prime is 673871711. The next prime is 673871741. The reversal of 673871720 is 27178376.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1876901 + ... + 1877259.

It is an arithmetic number, because the mean of its divisors is an integer number (23984100).

Almost surely, 2^673871720 is an apocalyptic number.

It is an amenable number.

673871720 is an abundant number, since it is smaller than the sum of its proper divisors (861110680).

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

673871720 is a wasteful number, since it uses less digits than its factorization.

673871720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 673871720 is about 25959.0392734400. The cubic root of 673871720 is about 876.7162917415.

The spelling of 673871720 in words is "six hundred seventy-three million, eight hundred seventy-one thousand, seven hundred twenty".