667077071 has 4 divisors (see below), whose sum is σ = 670068672. Its totient is φ = 664085472.

The previous prime is 667077067. The next prime is 667077113. The reversal of 667077071 is 170770766.

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

It is a cyclic number.

It is not a de Polignac number, because 667077071 - 2² = 667077067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667077001) 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, 1495466 + ... + 1495911.

It is an arithmetic number, because the mean of its divisors is an integer number (167517168).

Almost surely, 2^667077071 is an apocalyptic number.

667077071 is a deficient number, since it is larger than the sum of its proper divisors (2991601).

667077071 is a wasteful number, since it uses less digits than its factorization.

667077071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991600.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 667077071 is about 25827.8351977087. The cubic root of 667077071 is about 873.7596885683.

The spelling of 667077071 in words is "six hundred sixty-seven million, seventy-seven thousand, seventy-one".