1683669697 has 4 divisors (see below), whose sum is σ = 1700339796. Its totient is φ = 1666999600.

The previous prime is 1683669653. The next prime is 1683669707. The reversal of 1683669697 is 7969663861.

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 1623203521 + 60466176 = 40289^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1683669697 - 2⁷ = 1683669569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1683669397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8334898 + ... + 8335099.

It is an arithmetic number, because the mean of its divisors is an integer number (425084949).

Almost surely, 2^1683669697 is an apocalyptic number.

It is an amenable number.

1683669697 is a deficient number, since it is larger than the sum of its proper divisors (16670099).

1683669697 is a wasteful number, since it uses less digits than its factorization.

1683669697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16670098.

The product of its digits is 17635968, while the sum is 61.

The square root of 1683669697 is about 41032.5443641995. The cubic root of 1683669697 is about 1189.6493322147.

The spelling of 1683669697 in words is "one billion, six hundred eighty-three million, six hundred sixty-nine thousand, six hundred ninety-seven".