416544665 has 4 divisors (see below), whose sum is σ = 499853604. Its totient is φ = 333235728.

The previous prime is 416544647. The next prime is 416544671. The reversal of 416544665 is 566445614.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 254466304 + 162078361 = 15952^2 + 12731^2 .

It is a cyclic number.

It is not a de Polignac number, because 416544665 - 2²⁰ = 415496089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41654462 + ... + 41654471.

It is an arithmetic number, because the mean of its divisors is an integer number (124963401).

Almost surely, 2^416544665 is an apocalyptic number.

It is an amenable number.

416544665 is a deficient number, since it is larger than the sum of its proper divisors (83308939).

416544665 is an equidigital number, since it uses as much as digits as its factorization.

416544665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83308938.

The product of its digits is 345600, while the sum is 41.

The square root of 416544665 is about 20409.4258860949. The cubic root of 416544665 is about 746.8278854636.

The spelling of 416544665 in words is "four hundred sixteen million, five hundred forty-four thousand, six hundred sixty-five".