64181086 has 16 divisors (see below), whose sum is σ = 106367904. Its totient is φ = 28889344.

The previous prime is 64181071. The next prime is 64181093. The reversal of 64181086 is 68018146.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40255 + ... + 41818.

It is an arithmetic number, because the mean of its divisors is an integer number (6647994).

Almost surely, 2^64181086 is an apocalyptic number.

64181086 is a deficient number, since it is larger than the sum of its proper divisors (42186818).

64181086 is a wasteful number, since it uses less digits than its factorization.

64181086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82115.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 64181086 is about 8011.3098804128. The cubic root of 64181086 is about 400.3769072408.

The spelling of 64181086 in words is "sixty-four million, one hundred eighty-one thousand, eighty-six".