161670117 has 32 divisors (see below), whose sum is σ = 250530048. Its totient is φ = 90832896.

The previous prime is 161670101. The next prime is 161670121. The reversal of 161670117 is 711076161.

It is not a de Polignac number, because 161670117 - 2⁴ = 161670101 is a prime.

It is a super-2 number, since 2×161670117² = 52274453461587378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161670127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457813 + ... + 458165.

It is an arithmetic number, because the mean of its divisors is an integer number (7829064).

Almost surely, 2^161670117 is an apocalyptic number.

It is an amenable number.

161670117 is a deficient number, since it is larger than the sum of its proper divisors (88859931).

161670117 is a wasteful number, since it uses less digits than its factorization.

161670117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 161670117 is about 12714.9564293394. The cubic root of 161670117 is about 544.7659034457.

The spelling of 161670117 in words is "one hundred sixty-one million, six hundred seventy thousand, one hundred seventeen".