1677145 has 4 divisors (see below), whose sum is σ = 2012580. Its totient is φ = 1341712.

The previous prime is 1677133. The next prime is 1677163. The reversal of 1677145 is 5417761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 458329 = 1104^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 1677145 - 2⁵ = 1677113 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1677145 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167710 + ... + 167719.

It is an arithmetic number, because the mean of its divisors is an integer number (503145).

2^1677145 is an apocalyptic number.

It is an amenable number.

1677145 is a deficient number, since it is larger than the sum of its proper divisors (335435).

1677145 is an equidigital number, since it uses as much as digits as its factorization.

1677145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335434.

The product of its digits is 5880, while the sum is 31.

The square root of 1677145 is about 1295.0463312175. The cubic root of 1677145 is about 118.8110600109.

The spelling of 1677145 in words is "one million, six hundred seventy-seven thousand, one hundred forty-five".