161616682 has 8 divisors (see below), whose sum is σ = 244778976. Its totient is φ = 80023692.

The previous prime is 161616667. The next prime is 161616683. The reversal of 161616682 is 286616161.

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

It is a super-2 number, since 2×161616682² = 52239903801378248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161616683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392068 + ... + 392479.

It is an arithmetic number, because the mean of its divisors is an integer number (30597372).

Almost surely, 2^161616682 is an apocalyptic number.

161616682 is a deficient number, since it is larger than the sum of its proper divisors (83162294).

161616682 is a wasteful number, since it uses less digits than its factorization.

161616682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784652.

The product of its digits is 20736, while the sum is 37.

The square root of 161616682 is about 12712.8549901271. The cubic root of 161616682 is about 544.7058783892.

The spelling of 161616682 in words is "one hundred sixty-one million, six hundred sixteen thousand, six hundred eighty-two".