1616683717 has 4 divisors (see below), whose sum is σ = 1763654976. Its totient is φ = 1469712460.

The previous prime is 1616683709. The next prime is 1616683741. The reversal of 1616683717 is 7173866161.

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 1616683717 - 2³ = 1616683709 is a prime.

It is a super-2 number, since 2×1616683717² = 5227332481625872178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616683517) 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, 73485613 + ... + 73485634.

It is an arithmetic number, because the mean of its divisors is an integer number (440913744).

Almost surely, 2^1616683717 is an apocalyptic number.

It is an amenable number.

1616683717 is a deficient number, since it is larger than the sum of its proper divisors (146971259).

1616683717 is a wasteful number, since it uses less digits than its factorization.

1616683717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146971258.

The product of its digits is 254016, while the sum is 46.

The square root of 1616683717 is about 40208.0056332069. The cubic root of 1616683717 is about 1173.6583369136.

The spelling of 1616683717 in words is "one billion, six hundred sixteen million, six hundred eighty-three thousand, seven hundred seventeen".