33724081 has 2 divisors, whose sum is σ = 33724082. Its totient is φ = 33724080.

The previous prime is 33724079. The next prime is 33724091. The reversal of 33724081 is 18042733.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32262400 + 1461681 = 5680^2 + 1209^2 .

It is a cyclic number.

It is not a de Polignac number, because 33724081 - 2¹ = 33724079 is a prime.

It is a super-2 number, since 2×33724081² = 2274627278589122, which contains 22 as substring.

Together with 33724079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33724021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16862040 + 16862041.

It is an arithmetic number, because the mean of its divisors is an integer number (16862041).

Almost surely, 2^33724081 is an apocalyptic number.

It is an amenable number.

33724081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33724081 is an equidigital number, since it uses as much as digits as its factorization.

33724081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 33724081 is about 5807.2438385175. The cubic root of 33724081 is about 323.0824552181.

The spelling of 33724081 in words is "thirty-three million, seven hundred twenty-four thousand, eighty-one".