1677697 has 4 divisors (see below), whose sum is σ = 1917376. Its totient is φ = 1438020.

The previous prime is 1677673. The next prime is 1677703. The reversal of 1677697 is 7967761.

It is a happy number.

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: 7967761 = 199 ⋅40039.

It is a cyclic number.

It is not a de Polignac number, because 1677697 - 2⁷ = 1677569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1677667) 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, 119829 + ... + 119842.

It is an arithmetic number, because the mean of its divisors is an integer number (479344).

2^1677697 is an apocalyptic number.

It is an amenable number.

1677697 is a deficient number, since it is larger than the sum of its proper divisors (239679).

1677697 is an equidigital number, since it uses as much as digits as its factorization.

1677697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239678.

The product of its digits is 111132, while the sum is 43.

The square root of 1677697 is about 1295.2594334727. The cubic root of 1677697 is about 118.8240933724.

Subtracting 1677697 from its reverse (7967761), we obtain a square (6290064 = 2508²).

The spelling of 1677697 in words is "one million, six hundred seventy-seven thousand, six hundred ninety-seven".