47765645 has 8 divisors (see below), whose sum is σ = 57361920. Its totient is φ = 38183760.

The previous prime is 47765629. The next prime is 47765651. The reversal of 47765645 is 54656774.

47765645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 47765645 - 2⁴ = 47765629 is a prime.

It is a super-3 number, since 3×47765645³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47765596 and 47765605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080 + ... + 11510.

It is an arithmetic number, because the mean of its divisors is an integer number (7170240).

Almost surely, 2^47765645 is an apocalyptic number.

It is an amenable number.

47765645 is a deficient number, since it is larger than the sum of its proper divisors (9596275).

47765645 is a wasteful number, since it uses less digits than its factorization.

47765645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195.

The product of its digits is 705600, while the sum is 44.

The square root of 47765645 is about 6911.2694203019. The cubic root of 47765645 is about 362.8316932320.

The spelling of 47765645 in words is "forty-seven million, seven hundred sixty-five thousand, six hundred forty-five".