33197897 has 4 divisors (see below), whose sum is σ = 33693456. Its totient is φ = 32702340.

The previous prime is 33197893. The next prime is 33197903. The reversal of 33197897 is 79879133.

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 33197897 - 2² = 33197893 is a prime.

It is a super-2 number, since 2×33197897² = 2204200730445218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33197891) 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, 247679 + ... + 247812.

It is an arithmetic number, because the mean of its divisors is an integer number (8423364).

Almost surely, 2^33197897 is an apocalyptic number.

It is an amenable number.

33197897 is a deficient number, since it is larger than the sum of its proper divisors (495559).

33197897 is an equidigital number, since it uses as much as digits as its factorization.

33197897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495558.

The product of its digits is 285768, while the sum is 47.

The square root of 33197897 is about 5761.7616229761. The cubic root of 33197897 is about 321.3933287262.

The spelling of 33197897 in words is "thirty-three million, one hundred ninety-seven thousand, eight hundred ninety-seven".