161706470 has 8 divisors (see below), whose sum is σ = 291071664. Its totient is φ = 64682584.

The previous prime is 161706463. The next prime is 161706481. The reversal of 161706470 is 74607161.

It is a happy number.

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

It is a super-3 number, since 3×161706470³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8085314 + ... + 8085333.

It is an arithmetic number, because the mean of its divisors is an integer number (36383958).

Almost surely, 2^161706470 is an apocalyptic number.

161706470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161706470 is a deficient number, since it is larger than the sum of its proper divisors (129365194).

161706470 is a wasteful number, since it uses less digits than its factorization.

161706470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16170654.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 161706470 is about 12716.3858859347. The cubic root of 161706470 is about 544.8067322459.

The spelling of 161706470 in words is "one hundred sixty-one million, seven hundred six thousand, four hundred seventy".