660077 has 8 divisors (see below), whose sum is σ = 751680. Its totient is φ = 573760.

The previous prime is 660073. The next prime is 660097. The reversal of 660077 is 770066.

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

It is not a de Polignac number, because 660077 - 2² = 660073 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660071) 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, 1052 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (93960).

2⁶⁶⁰⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

660077 is a deficient number, since it is larger than the sum of its proper divisors (91603).

660077 is a wasteful number, since it uses less digits than its factorization.

660077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 660077 is about 812.4512293055. The cubic root of 660077 is about 87.0692626753.

The spelling of 660077 in words is "six hundred sixty thousand, seventy-seven".