33997641 has 4 divisors (see below), whose sum is σ = 45330192. Its totient is φ = 22665092.

The previous prime is 33997619. The next prime is 33997661. The reversal of 33997641 is 14679933.

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 33997641 - 2⁹ = 33997129 is a prime.

It is a super-3 number, since 3×33997641³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33997593 and 33997602.

It is not an unprimeable number, because it can be changed into a prime (33997661) 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, 5666271 + ... + 5666276.

It is an arithmetic number, because the mean of its divisors is an integer number (11332548).

Almost surely, 2^33997641 is an apocalyptic number.

It is an amenable number.

33997641 is a deficient number, since it is larger than the sum of its proper divisors (11332551).

33997641 is a wasteful number, since it uses less digits than its factorization.

33997641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332550.

The product of its digits is 122472, while the sum is 42.

The square root of 33997641 is about 5830.7496087553. The cubic root of 33997641 is about 323.9536875581.

The spelling of 33997641 in words is "thirty-three million, nine hundred ninety-seven thousand, six hundred forty-one".