33661316 has 12 divisors (see below), whose sum is σ = 63438732. Its totient is φ = 15535968.

The previous prime is 33661301. The next prime is 33661321. The reversal of 33661316 is 61316633.

It can be written as a sum of positive squares in 2 ways, for example, as 4393216 + 29268100 = 2096^2 + 5410^2 .

It is a super-2 number, since 2×33661316² = 2266168389703712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323615 + ... + 323718.

It is an arithmetic number, because the mean of its divisors is an integer number (5286561).

Almost surely, 2^33661316 is an apocalyptic number.

It is an amenable number.

33661316 is a deficient number, since it is larger than the sum of its proper divisors (29777416).

33661316 is a wasteful number, since it uses less digits than its factorization.

33661316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647350 (or 647348 counting only the distinct ones).

The product of its digits is 5832, while the sum is 29.

The square root of 33661316 is about 5801.8372952023. The cubic root of 33661316 is about 322.8818976055.

Adding to 33661316 its reverse (61316633), we get a palindrome (94977949).

The spelling of 33661316 in words is "thirty-three million, six hundred sixty-one thousand, three hundred sixteen".