1660077 has 12 divisors (see below), whose sum is σ = 2416960. Its totient is φ = 1097928.

The previous prime is 1660073. The next prime is 1660097. The reversal of 1660077 is 7700661.

It is not a de Polignac number, because 1660077 - 2² = 1660073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1660077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 588 + ... + 1914.

2^1660077 is an apocalyptic number.

It is an amenable number.

1660077 is a deficient number, since it is larger than the sum of its proper divisors (756883).

1660077 is a wasteful number, since it uses less digits than its factorization.

1660077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 1660077 is about 1288.4397541212. The cubic root of 1660077 is about 118.4066454832.

The spelling of 1660077 in words is "one million, six hundred sixty thousand, seventy-seven".