673766667 has 80 divisors (see below), whose sum is σ = 1189850112. Its totient is φ = 372003840.

The previous prime is 673766663. The next prime is 673766671. The reversal of 673766667 is 766667376.

It is an interprime number because it is at equal distance from previous prime (673766663) and next prime (673766671).

It is not a de Polignac number, because 673766667 - 2² = 673766663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673766663) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 3490923 + ... + 3491115.

Almost surely, 2^673766667 is an apocalyptic number.

673766667 is a deficient number, since it is larger than the sum of its proper divisors (516083445).

673766667 is a wasteful number, since it uses less digits than its factorization.

673766667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 381 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 54.

The square root of 673766667 is about 25957.0157568238. The cubic root of 673766667 is about 876.6707309123.

The spelling of 673766667 in words is "six hundred seventy-three million, seven hundred sixty-six thousand, six hundred sixty-seven".