69690161 has 16 divisors (see below), whose sum is σ = 75807360. Its totient is φ = 63866880.

The previous prime is 69690149. The next prime is 69690163. The reversal of 69690161 is 16109696.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69690161 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69690163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108401 + ... + 109041.

It is an arithmetic number, because the mean of its divisors is an integer number (4737960).

Almost surely, 2^69690161 is an apocalyptic number.

It is an amenable number.

69690161 is a deficient number, since it is larger than the sum of its proper divisors (6117199).

69690161 is a wasteful number, since it uses less digits than its factorization.

69690161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 69690161 is about 8348.0633083369. The cubic root of 69690161 is about 411.5195663700.

The spelling of 69690161 in words is "sixty-nine million, six hundred ninety thousand, one hundred sixty-one".