161086864 has 45 divisors (see below), whose sum is σ = 331381227. Its totient is φ = 75847392.

The previous prime is 161086853. The next prime is 161086879. The reversal of 161086864 is 468680161.

The square root of 161086864 is 12692.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 964509 + ... + 964675.

Almost surely, 2^161086864 is an apocalyptic number.

161086864 is the 12692-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161086864

161086864 is an abundant number, since it is smaller than the sum of its proper divisors (170294363).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161086864 is an equidigital number, since it uses as much as digits as its factorization.

161086864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The cubic root of 161086864 is about 544.1100015442.

The spelling of 161086864 in words is "one hundred sixty-one million, eighty-six thousand, eight hundred sixty-four".