64513827 has 96 divisors (see below), whose sum is σ = 123282432. Its totient is φ = 32845824.

The previous prime is 64513819. The next prime is 64513837. The reversal of 64513827 is 72831546.

64513827 is a `hidden beast` number, since 64 + 513 + 82 + 7 = 666.

It is not a de Polignac number, because 64513827 - 2³ = 64513819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64513791 and 64513800.

It is not an unprimeable number, because it can be changed into a prime (64513817) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 665043 + ... + 665139.

It is an arithmetic number, because the mean of its divisors is an integer number (1284192).

Almost surely, 2^64513827 is an apocalyptic number.

64513827 is a deficient number, since it is larger than the sum of its proper divisors (58768605).

64513827 is a wasteful number, since it uses less digits than its factorization.

64513827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 64513827 is about 8032.0499873943. The cubic root of 64513827 is about 401.0676208458.

The spelling of 64513827 in words is "sixty-four million, five hundred thirteen thousand, eight hundred twenty-seven".