33640741 has 2 divisors, whose sum is σ = 33640742. Its totient is φ = 33640740.

The previous prime is 33640721. The next prime is 33640757. The reversal of 33640741 is 14704633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30140100 + 3500641 = 5490^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 33640741 - 2⁵ = 33640709 is a prime.

It is a super-2 number, since 2×33640741² = 2263398910058162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33640721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16820370 + 16820371.

It is an arithmetic number, because the mean of its divisors is an integer number (16820371).

Almost surely, 2^33640741 is an apocalyptic number.

It is an amenable number.

33640741 is a deficient number, since it is larger than the sum of its proper divisors (1).

33640741 is an equidigital number, since it uses as much as digits as its factorization.

33640741 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 33640741 is about 5800.0638789586. The cubic root of 33640741 is about 322.8160985437.

The spelling of 33640741 in words is "thirty-three million, six hundred forty thousand, seven hundred forty-one".