33140647 has 2 divisors, whose sum is σ = 33140648. Its totient is φ = 33140646.

The previous prime is 33140623. The next prime is 33140683. The reversal of 33140647 is 74604133.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33140647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33140747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16570323 + 16570324.

It is an arithmetic number, because the mean of its divisors is an integer number (16570324).

Almost surely, 2^33140647 is an apocalyptic number.

33140647 is a deficient number, since it is larger than the sum of its proper divisors (1).

33140647 is an equidigital number, since it uses as much as digits as its factorization.

33140647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 33140647 is about 5756.7913806217. The cubic root of 33140647 is about 321.2084740947.

The spelling of 33140647 in words is "thirty-three million, one hundred forty thousand, six hundred forty-seven".