70166909 has 8 divisors (see below), whose sum is σ = 70741440. Its totient is φ = 69595200.

The previous prime is 70166903. The next prime is 70166917. The reversal of 70166909 is 90966107.

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

It is a cyclic number.

It is not a de Polignac number, because 70166909 - 2⁴ = 70166893 is a prime.

It is a super-2 number, since 2×70166909² = 9846790237228562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70166903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86114 + ... + 86924.

It is an arithmetic number, because the mean of its divisors is an integer number (8842680).

Almost surely, 2^70166909 is an apocalyptic number.

It is an amenable number.

70166909 is a deficient number, since it is larger than the sum of its proper divisors (574531).

70166909 is a wasteful number, since it uses less digits than its factorization.

70166909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 70166909 is about 8376.5690470502. The cubic root of 70166909 is about 412.4558316957.

The spelling of 70166909 in words is "seventy million, one hundred sixty-six thousand, nine hundred nine".