1668077 has 4 divisors (see below), whose sum is σ = 1703616. Its totient is φ = 1632540.

The previous prime is 1668061. The next prime is 1668083. The reversal of 1668077 is 7708661.

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: 7708661 = 19 ⋅405719.

It is a cyclic number.

It is not a de Polignac number, because 1668077 - 2⁴ = 1668061 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 (1667077) 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, 17699 + ... + 17792.

It is an arithmetic number, because the mean of its divisors is an integer number (425904).

2^1668077 is an apocalyptic number.

It is an amenable number.

1668077 is a deficient number, since it is larger than the sum of its proper divisors (35539).

1668077 is an equidigital number, since it uses as much as digits as its factorization.

1668077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35538.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1668077 is about 1291.5405529831. The cubic root of 1668077 is about 118.5965434223.

The spelling of 1668077 in words is "one million, six hundred sixty-eight thousand, seventy-seven".