64847044 has 24 divisors (see below), whose sum is σ = 120414168. Its totient is φ = 30451200.

The previous prime is 64847033. The next prime is 64847047. The reversal of 64847044 is 44074846.

It can be written as a sum of positive squares in 4 ways, for example, as 14152644 + 50694400 = 3762^2 + 7120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64846994 and 64847012.

It is not an unprimeable number, because it can be changed into a prime (64847047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49194 + ... + 50494.

It is an arithmetic number, because the mean of its divisors is an integer number (5017257).

Almost surely, 2^64847044 is an apocalyptic number.

It is an amenable number.

64847044 is a deficient number, since it is larger than the sum of its proper divisors (55567124).

64847044 is a wasteful number, since it uses less digits than its factorization.

64847044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 64847044 is about 8052.7662327923. The cubic root of 64847044 is about 401.7569465482.

The spelling of 64847044 in words is "sixty-four million, eight hundred forty-seven thousand, forty-four".