433687161 has 4 divisors (see below), whose sum is σ = 578249552. Its totient is φ = 289124772.

The previous prime is 433687151. The next prime is 433687183. The reversal of 433687161 is 161786334.

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 not a de Polignac number, because 433687161 - 2¹⁷ = 433556089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (433687151) 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, 72281191 + ... + 72281196.

It is an arithmetic number, because the mean of its divisors is an integer number (144562388).

Almost surely, 2^433687161 is an apocalyptic number.

It is an amenable number.

433687161 is a deficient number, since it is larger than the sum of its proper divisors (144562391).

433687161 is a wasteful number, since it uses less digits than its factorization.

433687161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144562390.

The product of its digits is 72576, while the sum is 39.

The square root of 433687161 is about 20825.1569261795. The cubic root of 433687161 is about 756.9354671489.

The spelling of 433687161 in words is "four hundred thirty-three million, six hundred eighty-seven thousand, one hundred sixty-one".