673938780 has 48 divisors (see below), whose sum is σ = 1903747104. Its totient is φ = 178124800.

The previous prime is 673938779. The next prime is 673938787. The reversal of 673938780 is 87839376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673938787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42921 + ... + 56480.

It is an arithmetic number, because the mean of its divisors is an integer number (39661398).

Almost surely, 2^673938780 is an apocalyptic number.

673938780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673938780 is an abundant number, since it is smaller than the sum of its proper divisors (1229808324).

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

673938780 is a wasteful number, since it uses less digits than its factorization.

673938780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99526 (or 99524 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 673938780 is about 25960.3308915738. The cubic root of 673938780 is about 876.7453727682.

The spelling of 673938780 in words is "six hundred seventy-three million, nine hundred thirty-eight thousand, seven hundred eighty".