66914886 has 16 divisors (see below), whose sum is σ = 133910784. Its totient is φ = 22291464.

The previous prime is 66914879. The next prime is 66914891. The reversal of 66914886 is 68841966.

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, 15391 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (8369424).

Almost surely, 2^66914886 is an apocalyptic number.

66914886 is an abundant number, since it is smaller than the sum of its proper divisors (66995898).

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

66914886 is a wasteful number, since it uses less digits than its factorization.

66914886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755.

The product of its digits is 497664, while the sum is 48.

The square root of 66914886 is about 8180.1519545788. The cubic root of 66914886 is about 405.9827497989.

The spelling of 66914886 in words is "sixty-six million, nine hundred fourteen thousand, eight hundred eighty-six".