66499914 has 16 divisors (see below), whose sum is σ = 143230752. Its totient is φ = 20461488.

The previous prime is 66499913. The next prime is 66499921. The reversal of 66499914 is 41999466.

It is not an unprimeable number, because it can be changed into a prime (66499913) 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, 426204 + ... + 426359.

It is an arithmetic number, because the mean of its divisors is an integer number (8951922).

Almost surely, 2^66499914 is an apocalyptic number.

66499914 is an abundant number, since it is smaller than the sum of its proper divisors (76730838).

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

66499914 is a wasteful number, since it uses less digits than its factorization.

66499914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852581.

The product of its digits is 419904, while the sum is 48.

The square root of 66499914 is about 8154.7479421500. The cubic root of 66499914 is about 405.1417763045.

The spelling of 66499914 in words is "sixty-six million, four hundred ninety-nine thousand, nine hundred fourteen".