1696321 has 4 divisors (see below), whose sum is σ = 1850544. Its totient is φ = 1542100.

The previous prime is 1696313. The next prime is 1696327. The reversal of 1696321 is 1236961.

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.

It is a cyclic number.

It is not a de Polignac number, because 1696321 - 2³ = 1696313 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 1696321.

It is not an unprimeable number, because it can be changed into a prime (1696327) 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, 77095 + ... + 77116.

It is an arithmetic number, because the mean of its divisors is an integer number (462636).

2^1696321 is an apocalyptic number.

1696321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1696321 is a deficient number, since it is larger than the sum of its proper divisors (154223).

1696321 is a wasteful number, since it uses less digits than its factorization.

1696321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154222.

The product of its digits is 1944, while the sum is 28.

The square root of 1696321 is about 1302.4288848148. The cubic root of 1696321 is about 119.2621624104.

The spelling of 1696321 in words is "one million, six hundred ninety-six thousand, three hundred twenty-one".