675791780 has 24 divisors (see below), whose sum is σ = 1424695608. Its totient is φ = 269262848.

The previous prime is 675791761. The next prime is 675791813. The reversal of 675791780 is 87197576.

It can be written as a sum of positive squares in 4 ways, for example, as 447660964 + 228130816 = 21158^2 + 15104^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60599 + ... + 70878.

It is an arithmetic number, because the mean of its divisors is an integer number (59362317).

Almost surely, 2^675791780 is an apocalyptic number.

It is an amenable number.

675791780 is an abundant number, since it is smaller than the sum of its proper divisors (748903828).

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

675791780 is a wasteful number, since it uses less digits than its factorization.

675791780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131743 (or 131741 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 675791780 is about 25995.9954608397. The cubic root of 675791780 is about 877.5481768881.

The spelling of 675791780 in words is "six hundred seventy-five million, seven hundred ninety-one thousand, seven hundred eighty".