64518066 has 32 divisors (see below), whose sum is σ = 146085120. Its totient is φ = 21099312.

The previous prime is 64518049. The next prime is 64518073. The reversal of 64518066 is 66081546.

64518066 is a `hidden beast` number, since 645 + 1 + 8 + 0 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64518066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8410 + ... + 14133.

It is an arithmetic number, because the mean of its divisors is an integer number (4565160).

Almost surely, 2^64518066 is an apocalyptic number.

64518066 is an abundant number, since it is smaller than the sum of its proper divisors (81567054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64518066 is a wasteful number, since it uses less digits than its factorization.

64518066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607 (or 22601 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 64518066 is about 8032.3138633896. The cubic root of 64518066 is about 401.0764049493.

The spelling of 64518066 in words is "sixty-four million, five hundred eighteen thousand, sixty-six".