47623645 has 4 divisors (see below), whose sum is σ = 57148380. Its totient is φ = 38098912.

The previous prime is 47623637. The next prime is 47623663. The reversal of 47623645 is 54632674.

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 5555449 + 42068196 = 2357^2 + 6486^2 .

It is a cyclic number.

It is not a de Polignac number, because 47623645 - 2³ = 47623637 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4762360 + ... + 4762369.

It is an arithmetic number, because the mean of its divisors is an integer number (14287095).

Almost surely, 2^47623645 is an apocalyptic number.

It is an amenable number.

47623645 is a deficient number, since it is larger than the sum of its proper divisors (9524735).

47623645 is an equidigital number, since it uses as much as digits as its factorization.

47623645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9524734.

The product of its digits is 120960, while the sum is 37.

The square root of 47623645 is about 6900.9886972810. The cubic root of 47623645 is about 362.4717885298.

The spelling of 47623645 in words is "forty-seven million, six hundred twenty-three thousand, six hundred forty-five".