667004377 has 4 divisors (see below), whose sum is σ = 718312420. Its totient is φ = 615696336.

The previous prime is 667004357. The next prime is 667004383. The reversal of 667004377 is 773400766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158231241 + 508773136 = 12579^2 + 22556^2 .

It is a cyclic number.

It is not a de Polignac number, because 667004377 - 2⁷ = 667004249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667004357) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25654002 + ... + 25654027.

It is an arithmetic number, because the mean of its divisors is an integer number (179578105).

Almost surely, 2^667004377 is an apocalyptic number.

It is an amenable number.

667004377 is a deficient number, since it is larger than the sum of its proper divisors (51308043).

667004377 is a wasteful number, since it uses less digits than its factorization.

667004377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51308042.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 667004377 is about 25826.4278792093. The cubic root of 667004377 is about 873.7279484107.

The spelling of 667004377 in words is "six hundred sixty-seven million, four thousand, three hundred seventy-seven".