673379840 has 160 divisors (see below), whose sum is σ = 1882647360. Its totient is φ = 226197504.

The previous prime is 673379771. The next prime is 673379867. The reversal of 673379840 is 48973376.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

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, 949406 + ... + 950114.

It is an arithmetic number, because the mean of its divisors is an integer number (11766546).

Almost surely, 2^673379840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (941323680).

673379840 is an abundant number, since it is smaller than the sum of its proper divisors (1209267520).

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

673379840 is an equidigital number, since it uses as much as digits as its factorization.

673379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 673379840 is about 25949.5633874638. The cubic root of 673379840 is about 876.5029256244.

It can be divided in two parts, 67337 and 9840, that added together give a palindrome (77177).

The spelling of 673379840 in words is "six hundred seventy-three million, three hundred seventy-nine thousand, eight hundred forty".