161404706 has 8 divisors (see below), whose sum is σ = 242164944. Its totient is φ = 80683060.

The previous prime is 161404703. The next prime is 161404709. The reversal of 161404706 is 607404161.

It is an interprime number because it is at equal distance from previous prime (161404703) and next prime (161404709).

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

It is not an unprimeable number, because it can be changed into a prime (161404703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681 + ... + 18843.

It is an arithmetic number, because the mean of its divisors is an integer number (30270618).

Almost surely, 2^161404706 is an apocalyptic number.

161404706 is a deficient number, since it is larger than the sum of its proper divisors (80760238).

161404706 is a wasteful number, since it uses less digits than its factorization.

161404706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19296.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 161404706 is about 12704.5151816195. The cubic root of 161404706 is about 544.4676292809.

Adding to 161404706 its reverse (607404161), we get a palindrome (768808867).

The spelling of 161404706 in words is "one hundred sixty-one million, four hundred four thousand, seven hundred six".