1677977 has 4 divisors (see below), whose sum is σ = 1917696. Its totient is φ = 1438260.

The previous prime is 1677971. The next prime is 1677997. The reversal of 1677977 is 7797761.

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: 7797761 = 139 ⋅56099.

It is a cyclic number.

It is not a de Polignac number, because 1677977 - 2⁴ = 1677961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1677971) 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 3 ways as a sum of consecutive naturals, for example, 119849 + ... + 119862.

It is an arithmetic number, because the mean of its divisors is an integer number (479424).

2^1677977 is an apocalyptic number.

It is an amenable number.

1677977 is a deficient number, since it is larger than the sum of its proper divisors (239719).

1677977 is an equidigital number, since it uses as much as digits as its factorization.

1677977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239718.

The product of its digits is 129654, while the sum is 44.

The square root of 1677977 is about 1295.3675154179. The cubic root of 1677977 is about 118.8307034050.

The spelling of 1677977 in words is "one million, six hundred seventy-seven thousand, nine hundred seventy-seven".