33720793 has 2 divisors, whose sum is σ = 33720794. Its totient is φ = 33720792.

The previous prime is 33720787. The next prime is 33720803. The reversal of 33720793 is 39702733.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29192409 + 4528384 = 5403^2 + 2128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33720793 is a prime.

It is a super-2 number, since 2×33720793² = 2274183761097698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33720733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16860396 + 16860397.

It is an arithmetic number, because the mean of its divisors is an integer number (16860397).

Almost surely, 2^33720793 is an apocalyptic number.

It is an amenable number.

33720793 is a deficient number, since it is larger than the sum of its proper divisors (1).

33720793 is an equidigital number, since it uses as much as digits as its factorization.

33720793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 34.

The square root of 33720793 is about 5806.9607369088. The cubic root of 33720793 is about 323.0719550097.

The spelling of 33720793 in words is "thirty-three million, seven hundred twenty thousand, seven hundred ninety-three".