47770645 has 8 divisors (see below), whose sum is σ = 61734456. Its totient is φ = 35276736.

The previous prime is 47770643. The next prime is 47770687. The reversal of 47770645 is 54607774.

47770645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10719076 + 37051569 = 3274^2 + 6087^2 .

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 47770645 - 2¹ = 47770643 is a prime.

It is a super-3 number, since 3×47770645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47770598 and 47770607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47770643) by changing a digit.

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, 367402 + ... + 367531.

It is an arithmetic number, because the mean of its divisors is an integer number (7716807).

Almost surely, 2^47770645 is an apocalyptic number.

It is an amenable number.

47770645 is a deficient number, since it is larger than the sum of its proper divisors (13963811).

47770645 is a wasteful number, since it uses less digits than its factorization.

47770645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734951.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 47770645 is about 6911.6311388847. The cubic root of 47770645 is about 362.8443529248.

The spelling of 47770645 in words is "forty-seven million, seven hundred seventy thousand, six hundred forty-five".