47645885 has 24 divisors (see below), whose sum is σ = 67137336. Its totient is φ = 32363520.

The previous prime is 47645867. The next prime is 47645891. The reversal of 47645885 is 58854674.

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 46963609 = 826^2 + 6853^2 .

It is not a de Polignac number, because 47645885 - 2⁶ = 47645821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26825 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (2797389).

Almost surely, 2^47645885 is an apocalyptic number.

It is an amenable number.

47645885 is a deficient number, since it is larger than the sum of its proper divisors (19491451).

47645885 is a wasteful number, since it uses less digits than its factorization.

47645885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1846 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 47645885 is about 6902.5998725118. The cubic root of 47645885 is about 362.5282039094.

The spelling of 47645885 in words is "forty-seven million, six hundred forty-five thousand, eight hundred eighty-five".