668077 has 4 divisors (see below), whose sum is σ = 669760. Its totient is φ = 666396.

The previous prime is 668069. The next prime is 668089. The reversal of 668077 is 770866.

668077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 770866 = 2 ⋅385433.

It is a cyclic number.

It is not a de Polignac number, because 668077 - 2³ = 668069 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124 + ... + 1162.

It is an arithmetic number, because the mean of its divisors is an integer number (167440).

2⁶⁶⁸⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

668077 is a deficient number, since it is larger than the sum of its proper divisors (1683).

668077 is a wasteful number, since it uses less digits than its factorization.

668077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 668077 is about 817.3597739062. The cubic root of 668077 is about 87.4196050674.

The spelling of 668077 in words is "six hundred sixty-eight thousand, seventy-seven".