33161966 has 8 divisors (see below), whose sum is σ = 49772640. Its totient is φ = 16571088.

The previous prime is 33161963. The next prime is 33161969. The reversal of 33161966 is 66916133.

It is an interprime number because it is at equal distance from previous prime (33161963) and next prime (33161969).

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

It is a super-3 number, since 3×33161966³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33161963) 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, 395 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (6221580).

Almost surely, 2^33161966 is an apocalyptic number.

33161966 is a deficient number, since it is larger than the sum of its proper divisors (16610674).

33161966 is a wasteful number, since it uses less digits than its factorization.

33161966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9898.

The product of its digits is 17496, while the sum is 35.

The square root of 33161966 is about 5758.6427220309. The cubic root of 33161966 is about 321.2773359126.

The spelling of 33161966 in words is "thirty-three million, one hundred sixty-one thousand, nine hundred sixty-six".