677120665042 has 8 divisors (see below), whose sum is σ = 1019295521532. Its totient is φ = 337355491200.

The previous prime is 677120664991. The next prime is 677120665043. The reversal of 677120665042 is 240566021776.

It can be written as a sum of positive squares in 2 ways, for example, as 640337644521 + 36783020521 = 800211^2 + 191789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 677120664983 and 677120665001.

It is not an unprimeable number, because it can be changed into a prime (677120665043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602419959 + ... + 602421082.

Almost surely, 2^677120665042 is an apocalyptic number.

677120665042 is a deficient number, since it is larger than the sum of its proper divisors (342174856490).

677120665042 is a wasteful number, since it uses less digits than its factorization.

677120665042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204841324.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 677120665042 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-five thousand, forty-two".