65678033 has 4 divisors (see below), whose sum is σ = 66791280. Its totient is φ = 64564788.

The previous prime is 65678009. The next prime is 65678083. The reversal of 65678033 is 33087656.

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 65678033 - 2¹⁰ = 65677009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65678083) 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, 556535 + ... + 556652.

It is an arithmetic number, because the mean of its divisors is an integer number (16697820).

Almost surely, 2^65678033 is an apocalyptic number.

It is an amenable number.

65678033 is a deficient number, since it is larger than the sum of its proper divisors (1113247).

65678033 is a wasteful number, since it uses less digits than its factorization.

65678033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113246.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 65678033 is about 8104.1984798005. The cubic root of 65678033 is about 403.4657861700.

The spelling of 65678033 in words is "sixty-five million, six hundred seventy-eight thousand, thirty-three".