65499994 has 16 divisors (see below), whose sum is σ = 112627008. Its totient is φ = 27986112.

The previous prime is 65499991. The next prime is 65500003. The reversal of 65499994 is 49999456.

It is not an unprimeable number, because it can be changed into a prime (65499991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (7039188).

Almost surely, 2^65499994 is an apocalyptic number.

65499994 is a deficient number, since it is larger than the sum of its proper divisors (47127014).

65499994 is a wasteful number, since it uses less digits than its factorization.

65499994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229.

The product of its digits is 3149280, while the sum is 55.

The square root of 65499994 is about 8093.2066574381. The cubic root of 65499994 is about 403.1008866373.

The spelling of 65499994 in words is "sixty-five million, four hundred ninety-nine thousand, nine hundred ninety-four".