1696421569 has 8 divisors (see below), whose sum is σ = 1706360040. Its totient is φ = 1686496896.

The previous prime is 1696421567. The next prime is 1696421579. The reversal of 1696421569 is 9651246961.

It can be written as a sum of positive squares in 4 ways, for example, as 427993344 + 1268428225 = 20688^2 + 35615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1696421569 - 2¹ = 1696421567 is a prime.

It is a super-2 number, since 2×1696421569² = 5755692279536843522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1696421561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338917 + ... + 343885.

It is an arithmetic number, because the mean of its divisors is an integer number (213295005).

Almost surely, 2^1696421569 is an apocalyptic number.

It is an amenable number.

1696421569 is a deficient number, since it is larger than the sum of its proper divisors (9938471).

1696421569 is a wasteful number, since it uses less digits than its factorization.

1696421569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899.

The product of its digits is 699840, while the sum is 49.

The square root of 1696421569 is about 41187.6385460492. The cubic root of 1696421569 is about 1192.6451924412.

The spelling of 1696421569 in words is "one billion, six hundred ninety-six million, four hundred twenty-one thousand, five hundred sixty-nine".