674361728020 has 48 divisors (see below), whose sum is σ = 1418273046288. Its totient is φ = 269342438400.

The previous prime is 674361727979. The next prime is 674361728063. The reversal of 674361728020 is 20827163476.

It can be written as a sum of positive squares in 8 ways, for example, as 45630086544 + 628731641476 = 213612^2 + 792926^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42402070 + ... + 42417970.

It is an arithmetic number, because the mean of its divisors is an integer number (29547355131).

Almost surely, 2^674361728020 is an apocalyptic number.

It is an amenable number.

674361728020 is an abundant number, since it is smaller than the sum of its proper divisors (743911318268).

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

674361728020 is a wasteful number, since it uses less digits than its factorization.

674361728020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18940 (or 18938 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 674361728020 in words is "six hundred seventy-four billion, three hundred sixty-one million, seven hundred twenty-eight thousand, twenty".