64665433 has 8 divisors (see below), whose sum is σ = 78250752. Its totient is φ = 52166976.

The previous prime is 64665413. The next prime is 64665437. The reversal of 64665433 is 33456646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64665433 - 2¹⁷ = 64534361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64665392 and 64665401.

It is not an unprimeable number, because it can be changed into a prime (64665437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271585 + ... + 271822.

It is an arithmetic number, because the mean of its divisors is an integer number (9781344).

Almost surely, 2^64665433 is an apocalyptic number.

It is an amenable number.

64665433 is a deficient number, since it is larger than the sum of its proper divisors (13585319).

64665433 is a wasteful number, since it uses less digits than its factorization.

64665433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543431.

The product of its digits is 155520, while the sum is 37.

The square root of 64665433 is about 8041.4820151512. The cubic root of 64665433 is about 401.3815416134.

The spelling of 64665433 in words is "sixty-four million, six hundred sixty-five thousand, four hundred thirty-three".