161706616 has 24 divisors (see below), whose sum is σ = 306100080. Its totient is φ = 80087168.

The previous prime is 161706563. The next prime is 161706619. The reversal of 161706616 is 616607161.

161706616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161706616² = 52298059316342912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161706619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101361 + ... + 102943.

It is an arithmetic number, because the mean of its divisors is an integer number (12754170).

Almost surely, 2^161706616 is an apocalyptic number.

It is an amenable number.

161706616 is a deficient number, since it is larger than the sum of its proper divisors (144393464).

161706616 is a wasteful number, since it uses less digits than its factorization.

161706616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 161706616 is about 12716.3916265582. The cubic root of 161706616 is about 544.8068962091.

The spelling of 161706616 in words is "one hundred sixty-one million, seven hundred six thousand, six hundred sixteen".