65820433 has 4 divisors (see below), whose sum is σ = 75223360. Its totient is φ = 56417508.

The previous prime is 65820431. The next prime is 65820437. The reversal of 65820433 is 33402856.

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 65820433 - 2¹ = 65820431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65820395 and 65820404.

It is not an unprimeable number, because it can be changed into a prime (65820431) 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, 4701453 + ... + 4701466.

It is an arithmetic number, because the mean of its divisors is an integer number (18805840).

Almost surely, 2^65820433 is an apocalyptic number.

It is an amenable number.

65820433 is a deficient number, since it is larger than the sum of its proper divisors (9402927).

65820433 is an equidigital number, since it uses as much as digits as its factorization.

65820433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402926.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 65820433 is about 8112.9792924671. The cubic root of 65820433 is about 403.7571674868.

The spelling of 65820433 in words is "sixty-five million, eight hundred twenty thousand, four hundred thirty-three".