667077 has 8 divisors (see below), whose sum is σ = 894240. Its totient is φ = 442320.

The previous prime is 667021. The next prime is 667081. The reversal of 667077 is 770766.

It is a happy number.

667077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 667077 - 2⁶ = 667013 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

667077 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (111780).

2⁶⁶⁷⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

667077 is a deficient number, since it is larger than the sum of its proper divisors (227163).

667077 is a wasteful number, since it uses less digits than its factorization.

667077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 667077 is about 816.7478190972. The cubic root of 667077 is about 87.3759657569.

The spelling of 667077 in words is "six hundred sixty-seven thousand, seventy-seven".