33880661 has 4 divisors (see below), whose sum is σ = 34139424. Its totient is φ = 33621900.

The previous prime is 33880619. The next prime is 33880669. The reversal of 33880661 is 16608833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33880661 - 2⁶ = 33880597 is a prime.

It is a super-2 number, since 2×33880661² = 2295798379593842, 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 (33880669) 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, 129185 + ... + 129446.

It is an arithmetic number, because the mean of its divisors is an integer number (8534856).

Almost surely, 2^33880661 is an apocalyptic number.

It is an amenable number.

33880661 is a deficient number, since it is larger than the sum of its proper divisors (258763).

33880661 is a wasteful number, since it uses less digits than its factorization.

33880661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258762.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 33880661 is about 5820.7096646371. The cubic root of 33880661 is about 323.5817043933.

The spelling of 33880661 in words is "thirty-three million, eight hundred eighty thousand, six hundred sixty-one".