33240661 has 4 divisors (see below), whose sum is σ = 35196012. Its totient is φ = 31285312.

The previous prime is 33240653. The next prime is 33240667. The reversal of 33240661 is 16604233.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29702500 + 3538161 = 5450^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 33240661 - 2³ = 33240653 is a prime.

It is a super-2 number, since 2×33240661² = 2209883087433842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977650 + ... + 977683.

It is an arithmetic number, because the mean of its divisors is an integer number (8799003).

Almost surely, 2^33240661 is an apocalyptic number.

It is an amenable number.

33240661 is a deficient number, since it is larger than the sum of its proper divisors (1955351).

33240661 is a wasteful number, since it uses less digits than its factorization.

33240661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955350.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 33240661 is about 5765.4714464647. The cubic root of 33240661 is about 321.5312708680.

Adding to 33240661 its reverse (16604233), we get a palindrome (49844894).

The spelling of 33240661 in words is "thirty-three million, two hundred forty thousand, six hundred sixty-one".