667117377 has 14 divisors (see below), whose sum is σ = 1000219602. Its totient is φ = 444744432.

The previous prime is 667117337. The next prime is 667117433. The reversal of 667117377 is 773711766.

667117377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 568393281 + 98724096 = 23841^2 + 9936^2 .

It is not a de Polignac number, because 667117377 - 2¹¹ = 667115329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667117337) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 456828 + ... + 458285.

Almost surely, 2^667117377 is an apocalyptic number.

It is an amenable number.

667117377 is a deficient number, since it is larger than the sum of its proper divisors (333102225).

667117377 is an frugal number, since it uses more digits than its factorization.

667117377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915131 (or 915116 counting only the distinct ones).

The product of its digits is 259308, while the sum is 45.

The square root of 667117377 is about 25828.6154681199. The cubic root of 667117377 is about 873.7772862594. Note that the first 3 decimals are identical.

It can be divided in two parts, 66711 and 7377, that added together give a cube (74088 = 42³).

The spelling of 667117377 in words is "six hundred sixty-seven million, one hundred seventeen thousand, three hundred seventy-seven".